Hello krileon, all right, well, the possibility to renew multiple plans at once is not actually a feature I was searching for, anyway, sure CB Subs is not intended to manage domains and hosting, however it should handle subscribtions, and the way it handles subscriptions is just not mature enough.
Thanks anyway for the effort. I did my best to learn your tool by reading all the 500 pages of documentation, you tube videos and read most of the forum threads here and I undoubtedly came to the conclusion that CB Subs is not a valid product for my case.