I was shadow banned from r/soccer a few months ago and I still don't know why. To be fair, I didn't even try to contact the mods about it, that sub is awfully toxic anyway.
That's strange, I use Mullvad VPN and Startpage is my main search engine and It's only given me trouble once. They made me fill a captcha and wait a while in order to be able to use it again, but it was just an our at most.