🚧 Bad news. The solution I thought should work, didn't work. All worked fine with re-installing, but the same problem occurred. It stops every time with indexing.
What now? The next two days I don't have the time to find a solution, like asking some experts. So I will add a half-baked workaround. Two times per day I will let the system index manually. Hopefully this will soften the pain until I find a solution.
Sorry for any inconvenience.