Quickbooks Plus Online with Mac App - no longer working

Hello, @john2001.

Thanks for posting your question here. I'd be glad to lend a hand with your QB Online app running slow.

Let's make sure that your computer meets the system requirements for the QuickBooks Online app for Mac. If you're able to verify that the conditions are met, we can start clearing the cache in your QuickBooks app to refresh the connection.

Here's how:

1. Select the Help option on the top menu.
2. Choose Reset App Data.

If you're still experiencing this, you can clear the app's cache by going to File in the upper left corner, then Clear Cache.

Let me know if the steps above did the trick. If you have any more questions, I'm always here. Happy Wednesday!

Thanks for the info Kendra!  

My Mac is a MacBook Pro with 16 GB of RAM and a 500 GB Solid-state hard drive and a 2.9 GHz I7 Processor.  So hardware is fine.  The OS is Catalina 10.15.13 which is beyond what Intuit lists on the link.  That may be the problem.  When using the app (up until Intuit got rid of it a couple weeks ago) I found I had to Reset App Data every time I would walk away from the computer for 5 minutes and would clear the cache a lot.  

But after having to replace the app I am stuck.  I cannot use the old app that worked.  The new app requires disabling Mac OS Security to install, and then essentially disabled the computer by wiping out my keychain and permissions.  Talking to Apple, they say the reason is Intuit did not build the app to its Catalina standards.  Despite now 5 attempts, I have not gotten any answer or help out of Intuit.

So I have had to use QB Online thru my Safari browser, no app, and it is unworkably slow.