Catawiki review: Alternative to Catawiki.com

I'm a seller... or used to be, at least before they have blocked me. I really enjoyed selling with them but know they want to avoid me because I raised my voice and pointed a few unfair actions of the site and they're ridiculous "experts" that don't know a thing about the items they're selling... they don't even read the object descriptions. Do you guys know an alternative to Catawiki? Please advise so we can all move. Thank you