Hello, MasTeR_XD.
You were banned for health hacking. Considering the fact that it was your first offence, the community of Plan B is willing to give you a second chance. To gain a possibility of joining the game again you have to remove all the hacks you have and wait a one-month penalty period.
You will be unbanned on the 29th of November, 2017. Please, be aware that connecting to the server before that date might extend your ban time even to the permanent one.