Technical Questions

1) What versions of Excel are supported ?
This add-in will not work on Office 2016, Office 2019 or Office 2021.
This add-in will not work with Windows 7.
This add-in will not work with Internet Explorer 11.
To get the latest builds of Microsoft 365, you will need to be on the Monthly Channel.

We had to restart

Sorry, we had to restart because this add-in wasn't responding  

Running a synchronous operation for more than 5 seconds will cause this error.
The add-in may have exceeded the run-time resource limit for an add-in.

link - learn.microsoft.com/en-us/office/dev/add-ins/concepts/resource-limits-and-performance-optimization 
link - learn.microsoft.com/en-us/office/client-developer/shared/troubleshooting-office-files-and-custom-solutions-with-the-telemetry-log 

To prevent the error from occurring, you should change the registry value in Excel.
This will turn of resource limit checks for the add-in.
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\Wef] "AlertInterval"=dword:00000000
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Wef] "AlertInterval"=dword:00000000

App error: Catalog could not be reached

Check the firewall settings because Catalog refers to the Office store.
Unable to access the Office Store

This add-in seems to be having problems

This add-in seems to be having problems 
Click "Restart" to try starting it again