I was using a VPS only running HEAT Wallet on it. It is no PC I am browsing the Internet with.
So the claim is someone deposited to Cryptopia from your account? Maybe you should take this up with them too and try to resolve it with their help. They have to know to whom the deposit went, and you can prove that you own the keys to that account.
Contact Crytopia immediately. Deposits to there must include id given by cryptopia so they must know to which account those are ended
Heat ledger can't do anything to it