The email you received when the move began explained
If you can suggest a clearer way to explain that would have helped you and others to understand the issue, we would appreciate the feedback.
It appears as if you've been deleting the Softaculous installed files via File Manager. This messes up Softaculous because the files it expects to be there are suddenly missing. If you wish to remove an installation that was installed via Softaculous we strong recommend using the delete button inside Softaculous so that the state of the files and installs remains in sync. Softaculous thought there was a Wordpress install in httpdocs/wp, a Concrete install in httpdocs/conc and another Wordpress install located in httpdocs/main but all of these files were deleted without using Softaculous delete button.
I was getting the same error as you even after cleaning up the mess. This is why we invite beta testers to test out the new server before we start bulk moving all of the accounts to the upgraded server. There was an issue with Softaculous connecting to MariaDB. It seems to be fixed now, and I was able to install Wordpress successfully on your account which can be seen at https://phoule.helioho.st/wp/ If you want to delete it please remember to use the delete button inside Softaculous, not just deleting the files through File Manager.
Thanks for helping to test the new Tommy2 server, and finding an issue that needed to be fixed.