Database connection issue while installing

Hey.
i’m back on you with a few more information. I changed the way i set up my vm’s and i got a slight increase in installation time, but its far away from hetzners v servers…

I tested around 9 installations this night, one time, the installation was successfull, but i cant figure out why. The time the installation was successfull, i used firefox and installed the plugin right before the installation.

i also tested this with chrome again - stuck on checking status. i tried it again with firefox (reinstalled plugin) - stuck at checking status. i cant figure out a pattern of what went wrong every time…