Some Host problem with Railjack&normal mission

[the-light-77]

Hello there, I have an issue with being the host of a squad. 

When I lauch a mission and have to wait for other members to come no problem. But when i want to invite some friends in my session, only one of them can join.

The thing that bothers me is the railjack. I can't invite my friends in my railjack (even if they have begun the rising tide quest) and again only one of them can join.

Could someone help me ?

light

[the-light-77]

Found out it might be due to the fact I was playing WF using the cellular network.