Please remember a few rules when enabling.
1) Make sure your VPS is FULLY BOOTED UP before you click any of the Enable buttons.
2) Wait 5 minutes after you click any of the Enable buttons, before you do anything to the VPS.
3) DO NOT CLICK BOTH PPP & TUN/TAP TOGETHER! Wait 5 minutes after Enabling one, then Enable the other! VERY IMPORTANT!
Most customers have problems when they click both Enable buttons and expect it to work properly, IT WILL NOT!