You have been unbanned. Bans were reset on that date. See:
Originally Posted by Zhao
In light of the Christmas spirit and as part of the celebration that our community will soon be eight years old we have decided to reset bans in-game, on the forums and on Discord. Anyone banned before December 5th 2019 has been unbanned. We have also reset all account warnings, weapon restrictions, admin prisons and newbie, ad & report mutes that were issued before December 5th 2019. We invite all members who have ever been a part of our shared history to rejoin us. This is a unique opportunity for us to reunite with many old friends. We hope that the people who broke the server rules or otherwise harmed the community in the past will take a different path this time. We're very excited to see old friends reunite at Horizon Gaming and hope everyone will make the most out of it. A warm welcome back to everyone that has returned!
Most unbanned players may find their money, materials, pot, crack and vehicles have been wiped as additional punishment for breaking the server rules (excludes 3 warning bans).
We advise those who were unbanned to make wise decisions this time by abiding by all of our rules. Our admins are on high alert and will be watching you, so don't blow this opportunity!
There are only a couple of people who have not been unbanned due to the irreversible harm they have done to the community.