Bug when auto updates the add-on Rated 1 out of 5 stars

This is the 3rd time I get an update for this add-on and it kills all my icons one the toolbar resetting them to default and removing all the others for the rest of my other add-ons.. Please fix it

This review is for a previous version of the add-on (5.0.1). 

Toolbar icons restore

Dear psychiatr,
Thank you for reporting this issue to us. We really appreciate your feedback.
We have fixed this bug, and now you can download the update v.5.0.2 from this link: http://imtranslator.net/ff-plugin.asp
We have performed an extensive testing, and we didn't find any problems whatsoever. We understand that every user may customize the browser its own way, but this update must overwrite all existing user's settings and keep them all.
Please let us know if you find any issues or problems that can disturb ImTranslator or your browser's regular functionality.

Thank you in advance for any feedback.