As Andrew advised to give them as much different leaves as possible we gave them a true feast -populus (poplar)
-salix alba (willow)
-senecio inaequindens (the yellow flower)
-taraxacum officinale (dandilion)
-ligustrum (privet)
-rubus and rubus idaeus (black and raspberry)
- a half grape and the inside (white) of an orange
Everything remains untouched

You are spot on they are indeed from Origin Ants I got the chance to look at his private collection and it was truely amazing! Also got a lot of intresting information and feedback!
My girlfriend reorganised the setting (she removed the hygrometer as we will return it to the shop and will replace it asap) in the meantime she made the opening a bit smaller on top and the stone collecting stopped.
So at the moment they are all in the nestbox lightly active moving some bits and pieces arround the fungus
So enjoyable to watch, they are less active then yesterday and not active with feeding the fungus since we moved the food further away. I think they didnt like the disturbance. We didnt like feeding them in the nestcube because of the fluctuating humidity it causes by opening and closing the lid