Rated 4 out of 5 stars

Looks like that sometime creating a new filter it write it with empty rules. That means that is mathed on all email... the only solution is reset all settings.
Could I provide any log to solve this problem? I would be glad to help

This review is for a previous version of the add-on (0.2.2). 

Hi, yes thats unfortunately right. Its maybe timing related, if the server is somehow slow while moving then an empty rule gets created. You dont have to reset all rules, just delete the single rules until the problem disappears. Sometimes there are multiple empty rules (related how much you clicked while the server was slow).

Will try to get this fixed soon!

BR
Otto