Someone else had the same question, anyway this is what I told them and this is what I recommend for you.
Moving money too fast
Cause: One of the most common ways to get an account suspended is by moving money too fast. Let me give you an example.
Let's just say that you received $200 right. Then 5 minutes later you try sending that $50 to someone else or try to buy something with it. Boom, your account gets limited. In PayPal's eyes, the reason why they limited you is that when you move money too fast, it looks suspicious, so they limit your account and stop you dead in the tracks.
So it applies to:
Receive money --> send money
Receive money --> withdraw money
Solution: When you receive money in your PayPal account, let it sit in there for 2- 3 days before you try spending it, withdrawing it, or doing anything with your money.
Taking in too much money
Cause: The second most common way to get an account suspended is by taking in too much money at one time. Look at it from PayPal's stand-point. If a guy that doesn't have an established history of receiving large amounts of money
suddenly starts getting hundreds of dollars at one time, it looks pretty suspicious. Don't be the guy that receives too much money at one time, or you'll get PayPal limiting you and asking you for personal details.
Solution: So how much money is too much? On a newer account, start off by taking payments less than or around $100 and don't let the total balance on the account get above $500. If the money gets near $500, wait a couple days and withdraw it or send it to another account. Of course, when your stealth account gets older, you can start getting larger amounts of money, but if you really want to be safe, that's the general guideline you should follow. Now if you need to receive more money than that, just use multiple stealth accounts to break the payments up.
Another potential outcome if you take in money too fast is that they will ask you for social security information in order to make sure you're properly taxed. Now PayPal quotes that this number is something like 200 transactions of $20,000 a year, whichever comes first. However, if you come out of the gate taking in a lot of money, they'll ask you for social security much sooner. So the best way to combat this is to just receive money through different accounts so the funds are more dispersed.
Spending/Withdrawing Exact Amounts of Money/Not leaving any money left in PayPal
Cause: Let's just say that you have $600 in your PayPal balance. If you try to go ahead and withdraw $600, you'll get limited. Always try to leave some money in PayPal, at least 10% (don't make it exact). When you withdraw like all your balance, it makes PayPal think that you're robbing the bank and skipping town. That means it's suspicious, so don't do this.
Solution: Always try to leave some money in PayPal (at least 10%). So for example, if you're withdrawing $600, leave like 60-70 dollars in there, don't withdraw everything. You'd be surprised how many people get limited by this sort of problem.

Error: When you try to send money, and get this message: "Add funds in your PayPal before sending money" when you do have money in the available balance.
Cause: When you try to move money too fast on a relatively new PayPal account. PayPal has this this filter that prevents you from sending out money. If you have a relatively new account and get this message, your account is under a soft review. However, don't freak out, because chances are, if you don't do anything else that's suspicious during this time, they'll usually release the balance in a couple of days.
Solution: When you get this message, don't try to send money out over and over again. Just leave the balance for a week and come back to try to send it again. It could last up to 21 days, so try again here and there. Most of the time, it's resolved after a couple of days.
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