You've come to the right place, @justtannoor.
Let's access your account via a private browser. This way, we can identify if it's browser-related or not. Let me guide you how.
- Press CTRL+SHIFT+N for Chrome.
- Hold and press CTRL+SHIFT+P for IE and Firefox.
After that, go back to upgrading your subscription again. If it's working fine, you can clear the cache of your regular browser. QBO collects cache files that helps you save time while browsing. Sometimes, these files and become outdated or corrupted, causing issues like the one you're having.
Here's the link for the detailed steps: Clear cache and cookies to fix issues when using QuickBooks Online.
If you're getting the same error, please contact our Customer Care Support so we can further investigate and assist you further in upgrading your QBO.
Please know that we're always here to lend a hand, so don't hesitate to leave a comment anytime. Thanks for posting and I wish have a great weekend.
