Thanks for giving the name of the apps, michael40.

At the moment, I haven’t seen an open investigation for these apps. I'd suggest contacting our Customer Support Team.  They'll further investigate why the apps are not disconnected successfully in QuickBooks Online (QBO).

Here's how to reach them:

1. Click on Help on the top menu.
2. Choose Contact us.
3. Enter a summary of the scenario in the What can we help you with? field.
4. Click on Let's talk.
5. Choose from Start messaging or Get a callback.

Please reply to this thread if you need anything else in QBO. I'm here to help.