You can reinstall your VPS server whenever you like with all the operating systems we offer - CentOS, Fedora, Ubuntu or Debian. You can do this when you login via your VPS hosting control panel - SolusVM and will see a button called Reinstall OS.
Note that will destroy all the data in your VPS server so be sure you have saved it all and have a VPS backup.
If you have problems doing the VPS reinstall you may just submit a ticket with the VPS server IP and hostname and the operating system you like to be reinstalled as the architecture 32 or 64 bit.