Please optimize this extension for Firefox Android

Does not work.

FF 71.0, Mojave 10.14.6

I hi-light text and copy.

I right-click where I want to paste it, the context menu shows "Clipboard Manager" but when I hover over it all that appears is "Sample clipboard item".

So how to "manage" my cllipboard clippings???

In 6 nov 2019, it is not working at all.

It does not work