I have today talked with the Provider support on the phone.
The result is simple: I pay this provider since 25 years.
Since ~1 Year we have lots of trouble with WEB-Hosting.
If we have more dropouts of this forum FROM TODAY,
the switch to a new provider will happen.
So anybody reading here can also see if that works or still doesn't work.
Its not that i will accept LESS DROPOUTs.
We get zero dropouts or we leave IONOS. After 25 Years.