Ok I got an answer from him.

Unfortunately he can't really help me finding software. I was kinda expecting that, we're talking about 25 year old stuff here as I'm sure you know, reading this topic on 68kmla 

Sooo, I have two options now. I want to stay with 7.5 for now. I can either sell the card back or hack the control panel to work with 7.5.

I will create a new topic about hacking a CP in the Hacks&Development section. See ya there