Baked Huel goods - how do they keep?

Just started experimenting with baking with Huel powder, was wondering if they need to be stored in the fridge? I’ve made a bread with huel, wholemeal flour and water - so I imagine huel would be the first ingredient to go off. Anyone else experimented with baked goods, and how long did they last in the fridge or at room temp?

I can’t really help, but with a “moldygrapes” username I assumed it didn’t really matter.