I'll help you fix this, safia-yusuf-real.
Unresponsive buttons are usually caused by the accumulated temporary internet files in the browser. To isolate the issue, you can resubscribe to QBO using an incognito or private window. Here are the shortcut keys:
If you're now able to subscribe successfully, go back to your regular browser and then clear its cache to enhance your browsing experience. You can also switch to other supported browsers as an alternative.
In addition, here's an article that will help you manage your payment method and QBO subscription plan: Update billing, payment, and subscription.
Feel welcome to reach out to me again with any concerns you may have. The Community always has your back.
Hope you’re doing great. I wanted to see how everything is going about your concern yesterday. We're you able to subscribe? Do you need any additional help or clarification? If you do, just let me know. I’d be happy to help you at anytime.
Looking forward to your reply. Have a pleasant day ahead!