I've tried hacking with a Hackclient (sausage) on my own server (not on others not honored) to test how good my anti-cheat is, I came across cracked accounts in the client and selected one. I did not know what and how it works. I can no longer log in with my Minecraft account. It always says: The connection to the server could not be established. What do I have to do if my account is blocked? Can I unlock it then else my 20 euro are thrown out of the window! Thanks to all who help.
Restarte your router
No, it's forbidden like all the cracked stuff but hey… Who cares?