Roster Level is Server Wide or Region Wide?

Hi, I´m currently playing on Zinnervale and I have roster level 35, if I were to switch to another EU server like Sirius so I can play with my friends on one server, do I keep my roster level or you have to build yours on every server?

Same question, waiting 4-8 hours in queue is ridiculous, but I already opened my Founder Pack on Zinnervale…

It’s server wide, you start a new roster when you join a new server