It should be a feature that Mozilla should include by default. I'm very grateful to the author for developing such an excellent add-on, and I hope that he will continue to develop it for many years to come, even though the specifications of Firefox change from time to time.

A1

it works really fine as for one and onlly function that i'm using, called "Clean All for current domain", works really well

Awesome work! This should be a feature of Firefox.
Only Feature missing: Integration with the existing Cookie Manager