Lighthouse audit not working, not showing any sites or errors

Hi there,

I’ve been trying to set up the lighthouse extension for some time now and have tried everything which I’ve found on the community, but nothing is working so far.

I have succesfully created the Google API key, for testing purposes I have not added any restrictions on the API key. When I test it in my browser I am getting a result, so it seems that the key is correct and working fine:

After setting everything up in MainWP and clicking the “Audit all sites” button, it is showing me a progress modal which shows checkmarks for every single site:

After closing the modal the table of websites is still empty:

This problem seems to be similar to the problem mentioned here: Lighthouse audit not working — doesn't list my sites in the extension UI, 'N/A' in the Sites UI

But sadly there is no solution provided in this thread.

I hope you can help me out.

Thanks!
Tim