Last screenshot would be the dynamic plan itself please.
So far all your settings look ok.
The net requirement shows that the demand is not considered by the MRP so I agree with your statement.
There are several things you can do for troubleshooting this:
1- check the dynamic plan parameters ensuring the parameters look ok
2- use a different plan and run net requirement for that product
3 - run MRP without any filter.
Let me know how you get along with this.
Cheers