Account dependent, For the "manual" one, we managed it from multiple devices.
Sometimes it would log itself out, or have trouble over bad wifi when switching profiles and log out. Either way, whenever your IP changes, chances of it logging out or PV are high.
I would take it off airplane and wifi and get PV as soon as it hit the 3-4G network on occasion.
Are they likely to get banned in the future? Maybe. I have a log of old and previous SIM's it's used,even if they are not active for those countries anymore. That way when I change the number in the profile, I have a way to prove that was my number at some point.
I tested this way on purpose. The MP "only" (created with US SIM then put on MP after), has had only 2 PV and 1 PW reset in 12+ months.