You can contact Tinder support and select Problem with account login. Tell them what's going on and ask them to look into it. Explain that you have no idea why you have been banned and have not knowingly broken Tinder's terms. Then leave it to see if they will revoke the ban and more POF app faq visit here

The only way to resolve Tinder something went wrong 40303 errors is to ask them to reinstate your account. It is generally recommended to create a new tinder profile with your Facebook account and / or telephone number. There are chances that you may get your profile back if your account was blocked in error. You must avoid sending private NSFW media to not to face Tinder error code 40303.