Rated 3 out of 5 stars

Using TB 128.3esr and Cardbook 95.5. I experience several bugs:
Cannot delete contact
Cannot move contacts across address books
And something strange. Now contacts with same category appears across address books but edit contacts show empty.

This review is for a previous version of the add-on (95.5). 

after the available 95.5, a new version is instance of approbation which fix most the known bugs (95.6 here :https://addons.thunderbird.net/fr/developers/addon/cardbook/versions/2491083)

if you have remaining issues, please open a ticket here : https://gitlab.com/CardBook/CardBook/-/issues