That sounds like it’s a commercial service. They should have a support option you can ask. It sounds like their deployment scripts are broken. Ansible and Docker are the easiest ways to run Lemmy, I’m guessing these guy’s scripts are just grabbing the docker images and launching them for you.
I'll see if I can find the script it uses and check but I think it's installed directly because I was able to fix the site when it didn't work after a restart using service lemmy restart.
No, it won’t work if it’s deployed wrong. Is this a shared host or a VPS service? If it’s a shared host and you’re just clicking a button to deploy a software package, it that host’s job to make that button work right.