Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello dear game masters , devs , players! I want to start on pve server , mostly now not for the end game , i love low level instances with groups , planning to play druid to tank them , but the problem is i dont really like it at the end game i prefer holy paladin , so i want to ask is it allowed to level in pve server alt-tabbing? I would love to level both chars at same time , as leveling holy paladin alone could be really boring .. And another question on previous servers i played i was using its really nice thing to me, so when i created character here i realized i get DC each time i move , thanks god it came fast to my head and i removed this thing , seems everything fine now... So i guess i cant use it?

you should actually read and follow the terms of use https://en.nostalrius.org/terms-of-use
this will quite certainly save you from getting banned considering your questions

Thank you for answers