I am not able to do resubscription... what to do please do guide me.

Hey there, KM. 

You got me here on resubscribing back to your QuickBooks account. It's super easy. Let's isolate this case by opening your account using a private browser or incognito to determine if this is a browser-related issue. Also, there are times that the browser stores frequently-accessed data, causing like unable to reactivate your account or unusual behavior. 

Let's try logging in to your QuickBooks Online account using a private or a different browser. Here's how:

• Google Chrome: press Ctrl + Shift + N 
• Mozilla Firefox: press Ctrl + Shift + P
• Safari: press Command + Shift + N 
• Microsoft Edge: press Ctrl + Shift + P       

Once logged in, and able to subscribe to your account. You need to clear the cache of the regular browser you're using. Like any other web-based platforms, QuickBooks Online collects cache files and cookies. You can also do this task on other supported, up-to-date browsers.  

You can use this article as a reference in resubscribing your QuickBooks account: How to resubscribe or reactivate QuickBooks Online.

Let me know if you have follow-up questions. I'll be right here to continue to help you. Take care and stay safe always.