Zoho Notebook Web Clipper Firefox add on -- getting rid of the floating icon?

Thank you for a great product to the Zoho Notebook team.

One major annoyance: With a recent update, the Firefox Add-on launches a floating icon to quickly add notes. I have tried, now, for hours, to find out how to remove it on Ubuntu Firefox -- it even floats over played back video!

Maybe the right "disable" button is right there in front of my nose, but I've so far tried right clicking, checking Zoho Notebook preferences, the add ons' prefs, and Firefox add on general prefs. If it really is in there somewhere, seems to me you have a UX issue of making it more conspicuous.

With sincerest gratitude!

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