I will try to explain it better!
I tried two android phones with mobile data, their settings are Remote Connect to LAN. Both worked as they should, I reached everything like I was on my home network. I could reach my 3D printer, Unraid, my router, everything on their usual address.
However, the Ipad, connected to one of these android phone's hotspot could only reach my router on its default 192.168.1.1 address and my Unraid server login page via this address (in Remote connect to LAN mode too): (but not on the 192.168.1.121, Unraid's address on my home network)