I unlocked the hunt for Endwalker by completing the quests for ARR and Heavensward; however, while I was able to accept the mark bills and complete them, I only received exp and money, not sacks of nuts. It was only until after I went back and unlocked the Shadowbringers hunts, was I able to start receiving sacks of nuts from monster kills.

Either the Endwalker hunts shouldn't be unlocked unless you have the past expansions' ones unlocked, or just being able to accept mark bills in Endwalker areas lets you get the currency regardless.

This is an issue that's the result of the currency being the same between expansions and the currency itself having to be unlocked.

PS5, 12/10/21, Crystal, Zalera, Ylidium Pyogenes