Can not change/switch location when on wifi

I am just new with smartthings so if you need more info to help please let me know.

I use the smartthings app on mij android galaxy s9 with android 10.

If i have a working wifi connection on my phone i can change/switch between locations (hans thats me, and nadine is my wife). But if i have no working wifi connection i cant change/switch location. The + sign is than gone and it says “loading” if i try to tapp on the name the last chosen location.

This is the situation with wifi.