Can’t cofigure compatibility(not working)

Compatibility feature not working, have tried different combinations and playing around with attributes but doesn’t seems to work.
Situation is like this:
Computer Build is the function of plugin and hase different steps, Most importat are the 2-3 firs ones.
Case, CPU, Motherboard so customers don’t mix up different parts.
But as far as im trying i can’t get it to work. Have created some attributes for all 3 first steps and added to each product.
Can you help me setup ti right?

Thanks.