Paypal is one of the best online payment processors. To prevent money laundering,cheating and stealing, paypal has put in place measures to block accounts which are suspicious.PayPal might limit your account and freeze your funds because:

You received too much money into your account (this can be any amount that is not in proportion to what you normally received during the average history of your account).
You transferred too much money out of your account ($2,000 US is the rumored amount that triggers the fraud system).
You called customer service at PayPal and made somebody angry (there are documented cases of irate customers calling PayPal only to find out their accounts were limited moments after the phone call was made).
PayPal has reason to believe you have more than the allowed two PayPal accounts (One Personal Account/One Premier Account).
Somebody filed a complaint with PayPal about you (a buyer or a seller or an interested third party).
You filed a complaint against somebody (a buyer or a seller).
You initiated a chargeback with your credit card
You initiated a chageback with your credit card company before you filed a claim through PayPal’s Buyer or Seller Protection
PayPal thinks you are trying to avoid paying PayPal fees by charging excessive shipping & handling charges for your
PayPal thinks you are using your PayPal account to speculate in the currency
PayPal doesn’t agree with some content on your website (example: a man who ran a well known blog had his PayPal account limited because his website contained a link to the Pearl terrorist killing. He accepted PayPal donations on his website for his news blog).
PayPal believes you are in violation of its User
PayPal believes you are in violation of its Acceptable Use Policy (example: PayPal believes you used your account to purchase a dirty book or dirty magazine).
PayPal believes you are in violation of its Privacy Policy (example: you gave information to the police about a fraud suspect who is also a PayPal member).
PayPal believes you are in violation of their User
You used your PayPal Debit Card to purchase material that PayPal finds objectionable (even if it’s legal in the real world).
You charged too much money on your PayPal Debit
You went on vacation and used your debit card in another state or another
You used your PayPal debit card to make an online transaction that was not through PayPal (or a telephone order).
You refunded a buyer through your PayPal account — but did not use the proper refund
You lost a dispute
You are late Paying your eBay fees — or you owe eBay
You received a negative feedback comment on your eBay
You chose to use your PayPal account without verifying
PayPal believes that your account information is not up-to-date — even if they have no grounds to actually believe
PayPal tried to contact you over the phone and you did not
You were the victim of fraud (example: you clicked on a link in an email that you thought was from PayPal but it was really a phishing website).
You reported to PayPal an unauthorized purchase made on your PayPal account or your credit
You moved into a house or new apartment that was occupied by somebody with a limited PayPal
You logged into your PayPal account from a location that was not your usual log in location (example: friend’s house or place of employment).
PayPal has linked your account with another person who has a limited account and/or outstanding issues to resolve with
PayPal froze your account because they linked you as being “associated” with a family member of yours that has an outstanding PayPal problem to deal
After conducting a credit check on you, your credit score was too high, too low or you had too many open lines of credit or
A third party contacts PayPal saying — without evidence — that you are engaging in fraudulent
PayPal suspects you are engaging in fraudulent
PayPal believes that your business practices are risky and pose a potential harm to yourself, to PayPal and to other PayPal
The phone number you registered with PayPal happens to be the same phone number of somebody who has/had PayPal
You new provider has some IP number was associated with somebody who has/had PayPal
You conducted a transaction with an individual who has PayPal problems (such as a buyer or a seller). PayPal will “link” you with that
You sold something and the buyer was a con artist or scammer. You get “linked” to that
You violated PayPal’s user agreement by posting anti-PayPal writings or thoughts in a public place (example: internet)
Your name, your address, your phone number, or your ISP is SIMILIAR to a person who has/had PayPal
You were associated with a person who has a frozen PayPal
You refused PayPal’s request for very private information about
PayPal requested information from you which you supplied — but you did not supply it fast
You logged into your PayPal account from a public internet
You sold an item on eBay that is popular for scammers to sell (high priced items or popular items like Rolex watches, Play Stations, Computers, )
You sold an online e-book to a buyer who later filed a complaint against you – PayPal asked you for a tracking number and you could not provide it.
You went to PayPal’s website and logged in using a proxy service or other anonymous software that you use to protect yourself on the internet.
While registering, you typed your name wrong into your personal profile (example: Smith, John when it should be John Smith)
You bought or sold something that was on PayPal’s Restricted Items List (academic software, concert tickets, OEM software, surveillance equipment or adult material, )
You sent money to a country that is on PayPal’s unauthorized
You received money from a country that is on PayPal’s unauthorized
The bank account you verified with PayPal was a new
You have a high credit card balance that triggered PayPal’s fraud detection system – a high card balance means a higher risk that you will engage in
PayPal conducted a third party investigation of you. Based on those findings, they limited your account (you have been sued, arrested, charged with a crime, have too many debts ).
PayPal tried to withdraw money from your bank account or credit card and was
You PayPal account shares similar details with an account that has already been
You PayPal account is in the
Your PayPal account might become in the
A chargeback was filed against
You attempted to modify or change your personal details but were not able
You removed your bank account or credit card information from your PayPal
PayPal believes you are not who you say you
You withdrew or transferred $2,500 or more from your PayPal account within 24 hours or over a
You did something strange (example: transferred money to a roommate with a PayPal account or a family member).
Your overall withdrawal and deposit activity is “suspicious.”
Your name on your social security number does not match EXACTLY what is on your PayPal account (example: Social Security Card/Number is Robert Smith but your PayPal account name is Bob Smith).
The name on your bank account or credit card does not MATCH exactly with the name on your PayPal account (example: William Smith vs. Will Smith or Bob Smith).
There are an additional 100 plus fraud ques unknown to the general public that will trigger an unpleasant experience with

Avoiding Suspicion

To prevent your account from being limited in the first place, keep your account in order by following these guidelines:

Treat your PayPal account as you would your bank account: use secret passwords and keep them to yourself!
Make sure your true name is on your PayPal account and that it matches the name on your bank and credit card accounts. If you are a business, make sure the bank account and credit card on your account are also in your business
Use accurate addresses and phone numbers that match those on your credit card and bank account, and keep them current. False contact information can raise suspicion on your account and make it more difficult to regain
Delete old or obsolete bank accounts and credit cards from your account. If you do not keep your account up-to-date, you might find yourself in a bind when your account is limited and PayPal asks you to prove ownership of a bank account with an old
If you are a seller, always use electronically trackable shipping methods so that if the shipment or receipt of a physical good is in doubt, you can easily prove your case. Also make sure to keep proof of inventory or merchandise, such as receipts, invoices, or proof of authenticity for older, collectible items. Maintain good relationships with your suppliers so that you can easily access this information when you need
If you have any old or abandoned PayPal accounts, make sure to resolve your issues with those accounts and then close them. If your account has been limited and PayPal sees linked accounts with issues, such as a negative balance or outstanding buyer complaints, PayPal will probably ask you to resolve those issues as well before they’ll be willing to lift the limitation on your active

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