Also if you are using unrealated terms just because they are popular when your
website hosting has nothing to do with these terms you are penalised, even though it isn't "prohibited" in any rules.
Don't forget Google manually review
website hostings as well so they could have just come across yours and blacklisted the
website hosting for the improper use of title and meta tags and it may just be coincidence that they blacklisted the
website hosting as you changed server.
Contacting Google might shed some more light on your situation!
