Just a thought, people have had problems accessing Achat before. It wasn't a password problem, they had had a skype update or similar recently and the security picked up with it at the same time prevented access and had to be disabled.Have you had an update recently? The way to check is to try and access Achat as a freeuser. If that doesnt work either, it maybe something in a recent update. If so, try uninstalling Achat completely and then reinstalling the whole programme again.If you can, its a password problem and therefore Support should be able to reset it for you.Good Luck and let us know how you get on.
Problem solved thanks to support. I was not hacked but had an account problem.