Hotspot is limited to one device at a time!

Novice III

Hello! I joined visible through the 15-day trial. It seems okay because I can use it as hotspot, I can do Viber out, my iPad can do all things while connected to the hotspot. This morning after reading @phoneman2021’s reply post, I tried a second hotspot connection from my laptop. My current carrier allows multi device hotspot connection! Is this controlled by visible or by the fact that the service is through an eSIM??? Can some expert explain why? Thanks.