I appreciate you reaching out for support here in the Community. I'd like to provide some clarification as to why your account may be suspended.
If your QuickBooks Online account becomes suspended, this is most likely related to the card on file to pay for the subscription, such as it being expired. I recommend calling in to speak with a member of the Support Team to get this resolved as quickly as possible. An agent will be able to look at your account details to determine the root of the problem.