It's important that you have the right tools in order to be able to manage your company. QuickBooks Online is a great tool able to help you keep track of sales and expenses so you can see the profitability of your business. I can provide some information about account suspension as well as request a callback from the support team.
Two of the most common reasons for an account being suspended would be a failed payment for your subscription, or going over usage limits.
To request a callback from the support team, you can follow the steps below. They'll be able to verify your information with you in a secure setting in order to see your account in the system to determine the reason why it was suspended.
Schedule a Callback or start a Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
If you have any other questions, feel free to reach out here.