After you have purchased gold coins, EA has sent an email with a message to alert you. If EA recognizes that a user has made a purchase and is advised Madden 22 coins, it will remove all coins. When the coins are cleared you are able to continue buying other coins from third parties, and EA will be able to earn coins and cards in the account. It will also block MUT.
You can reduce the likelihood to be suspect in many ways: Purchase a small amount or avoid purchasing during the Madden event to avoid punishment. After you have purchased small amounts of coins frequently, please use the self-pickup technique to withdraw coins fast. This will lower the possibility of clearing coins or raising the flag. Use a self-service system on a mobile device, or use a system for self-service that is on a computer.
If you are looking to purchase a large number of goods (such in the range of 500.000) then you must consider buying a smaller amount of goods (such as 250k in just two weeks) twice. When your list is safe, you will be absolutely secure. Avoid using silver and bronze players.
Unfortunately, there's no positive news. Prohibition remains a matter of law and it's difficult to lift the ban. EA offers players a contact form. You may request a review for banned accounts. It will allow you to look over the history of the account that is banned buy madden coins. It is however not easy to get an affirmative response. You may try your luck and maybe it's worth it.