Really nice add-on, but the don't override function is not working

Lots of shortcuts, I discovered services I never heard about before. And the sync between browsers is nice. Maybe a feature to import from the official google apps menu would be cool.

Wszystko w jednym miejscu :) Polecam!

Initially I had some trouble with Firefox, but now it works great. I was disappointed that it didn't work on Waterfox—until I discovered that it DOES work, but the icon is not visible! When I first open the browser it pops up for an instant and then disappears. But if I click the blank space where it should appear, it works just fine. I've tried all the icon options and so far, none are visible but I am hoping a future update fixes the issue. In the meantime, it still functions perfectly. Great addon.

NOTE! The last update fixed it in Waterfox and now the icon appears in the toolbar. Developer response gets an A+.

Thanks! Just what i was missing for my switch from Chrome to Firefox