Today i received a message from the enpass support and they send me this instruction. Follow these steps and the synchronisation with GDrive will work fine again!
1- Enpass Settings>Advanced>Erase everything
2- Kill Enpass from Background
3- Rename Enpass folder again like Enpass_Crash or Enpass_Old and then remove the 6.8.5
4- Uninstall Enpass 6.8.5
Download the 6.7.4. here: https://dl.enpass.io/stable/windows/setup/6.7.4.933/Enpass-setup.exe
Finally!