How to get CUD and GF to work together?

I’m having a terrible time to make CUD, also know as Custom Upload Directory, to work with GF, also know as Gravity Forms, and I have no idea whatsoever how to solve this.

I know these are not WPMUDEV plugins, but since there’s a lot of WordPress experts here, I thought it would be worth to try getting some help here, as I have exausted the amount of help I could get from CUD and GF themselves.

Until now, this is the best clue to solve the issue, but I don’t know how to apply it:

Who knows, perhaps finding an answer for this issue here, will serve to show how WPMUDEV community is on another level.