Many people have complained about this same issue as you. Nordeus has not given us any technical explanation other than you are on a different server and it can only be changed under special circumstances. They cannot tell us why for some reason, nor can they fix this. Do they even want to fix this? Is this an issue for them or do they actually care?

Send a support ticket to Nordeus and ask them to be on the same server as your friends. You never know, it might work