Homegear hass.io add-on - Testers needed

Ok. So maybe this is a problem as well. Yesterday the flashed cube was correctly connected to homegear and shown in the list of gateways. Now I have a lot of connection failures.

Did you change anything else in the homegear setup beside the max! family file?

The cube is freshly flashed (2 days ago) and the radiator valves are factory reset but I can’t pair them with the cube. I followed this (Converting a MAX! Cube to CUL/CUN to use with Home Assistant)

You’ve bought a CUL-Stick which is connected via USB to your hostsystem (Pi?) and integrated as a CUL in the max! family config file. Am I right?

Another question:
How do you handle weekly schedules? Do you send them via homegear to the valves and store them direct on each device? Because a year ago this didn’t work, I got always an error in homegear.

I really appreciate all help because I don’t want to change all my valves and want to integrate them properly to Hassio. Thank you