Honestly, Cash App never closes the account without any reason at all. There must be something wrong that forces Cash App to close your account. You should know that Cash App take action on those accounts which are found to be violating the terms of services. If there is any unusual activity that is supposed to make security concerns for you and the recipient, Cash App may close your account. Therefore, if you use Cash App as per the guidelines, you can enjoy uninterrupted payment services. 
 
What will you do if your Cash App account is closed? You can recover your account if there is no serious violation. Approach customer support and request to open the account. The support team may ask you additional questions to ascertain your Cash App identity. Once you satisfy the support team, you may be granted permission to access your account. After that, you can access all features of your Cash App including funds.