So they told me I was infringing 4 years later... when there are numerous apps in the store doing the same. It's also a cleaner that works only of Facebook. Google reviewed it and approved it 4 years ago. The extension is free. There is no advertising. I don't make any profit.

I was never told what to do or how to change it so that my users would still recognize it. Also changing its name in "Cleaner - For Facebook" was suggested (and accepted) for the Safari extension by the Safari Gallery Team.

If I don't know what I'm doing wrong, I can't fix it. This is not about TM infringement, but the total lack of communication by Google.

Thing is that they basically told me I can't do anything if the original complainant gives his go-ahead ... after 3 months of canned responses.

I agree with your second point.

(I'm the author of the post).