I'm here to help ensure you can operate your QuickBooks Online (QBO) account.
One of the possible reasons why QuickBooks says you're not subscribed is that you're using a different login credential. You'll want to ensure you're using the correct login credentials. Then, select the right company.
If you log in to the correct account and choose the right company file but still get the same issue, let's log in to your QBO account using a private browser. There are times when the browser you're using has a data issue, thus causing QuickBooks to act weirdly. To do so, press this shortcut key on your keyboard:
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Safari: Command + Option + P
If this works, you need to clear the browser's cache so the system can start fresh. If you get the same result while using a private browser, I suggest switching to a different one.
If the issue persists, I recommend contacting our QuickBooks Support Team. This way, they can further check on this matter and provide in-depth troubleshooting steps to get this resolved.