I've got you covered, Action Company.
 

I'd suggest logging in to your QuickBooks Online account via a private window. This doesn't use the existing cache files, which makes it a good place to determine if this is a browser-related issue.
 

Here are the keyboard shortcuts:

• Mozilla Firefox / Internet Explorer: Press CTRL + Shift + P
• Safari: Press Command + Shift + N
• Google Chrome: Press CTRL + Shift + N

Once signed, access your price rules. If you're able to do so, let's clear the cache of your browser. This helps remove its stored cache so QuickBooks will perform efficiently.

If private browsing doesn't work, I'd recommend using different browsers. They'll provide you the best and most secure experience with QuickBooks. For more details, see this article: System Requirements For QBO.

Aside from Price rules, you can also create Banking rules in QuickBooks Online. To know more about this, please see this article: Set up Bank Rules to Categorize Online Banking Transactions.

We're always here in the Community to help if you have other questions or concerns in managing price rules. Stay safe!