I think I got it sorted. I tried it on 6 different computers/laptops/VMs/Ubuntu/Windows and it never worked. Then I tried Chrome and after I clicked install I was presented with a picture of (I assume) you and a "Continue" button. I had never bothered to click on that before, always going straight to the extension button in the top right corner. However, if you don't press "Continue" it doesn't request the permission it needs to work.

I don't know if this is possible, but it might make sense to check that tab permission again (for example, when the user tries to block a site).

Hopefully that makes sense. Let me know if you need further clarification.

Ah, gotcha. If I'm understanding correctly, you skipped the onboarding which is where permissions are granted so it never worked.

Thanks for finding this! Will add a check like you suggested.

I had the same experience.

I clicked the continue button, but in the following screen clicking the "grant permission" button didn't do anything.

I uninstalled and reinstalled the extension, same thing. But this time resizing or moving the browser window showed the Firefox Addon prompt that should have been shown previously, but not long enough for clicking it. I was using Firefox under Wayland.

I tried a third time, now using Firefox under XWayland, and this time the prompt was correctly shown.

I tried on 75.0. I disabled all my extensions except yours and restarted. No luck.

Can you email me at the address above? Would like to help you get this working and happy to jump on a Zoom call to debug the issue with you.

I only have WebEx extension installed. I am on Win10 using Firefox 75 64bit.