You should rethink how raids and sieges work. It’s difficult to play with others given that you can’t keep the game open in the background without it losing connection and needing to reload. So you must be on at the exact same minute. You can’t open another app while waiting or it crashes and needs to reload. But at the same time keeping the game open drains your battery significantly. It’s a catch 22.
So either fix the run in the background issue or add a LFG type of feature to play raids and sieges with random people like how PVP works.
It would also be helpful to have a push notification when someone posts to guild chat or someone is looking for a guild member to do a raid or siege with.