Hello, tluke. 

I appreciate you taking the time to follow the steps provided by my colleagues. Don't worry; I have more troubleshooting steps to help you determine why transactions keep suggesting categories. 

Open QuickBooks in a private or incognito window. It can help us eliminate any cache-related issues that may have contributed to the problems. To access it, use the following shortcut keys:

• Google Chrome: Press CTRL + Shift + N.
• Safari: Press Command + Shift + N.
• Mozilla Firefox: Press CTRL + Shift + P. 

If private browsing doesn't work, I'd suggest using different browsers. It provides you with the best and most secure experience with QuickBooks. For more details, please see this article: System Requirements For QuickBooks.   

I'd also appreciate it if you included a screenshot or more detailed transaction information to suggest the categories. Are you referring to the for review tab or to your register?
 

I'll add this article for future reference:  Categorize and match online bank transactions in QuickBooks Online. This link will help you match and categorize the transactions. 

If you have follow-up questions for me, leave a comment below. I'd be more than happy to answer it for you. Have a great day!