Don't get too exercised by the law change, also don't believe what you read on the PPC websites. An appeal is a waste of time but if you appeal it will be rejected but an appeal to the independent POPLA will cost the PPC £27 and the ruling is not enforceable against you, I.e. you can still ignore them.
In this case it is a legalised scam. There is plenty of info on pepipoo, can't recommend it enough.