It seems that after 17th of December maintenance Guild upgrade queue is not working. Those guild upgrade queues what were end of progress are stucked. Those guild upgrade queues what were empty, can not start to building new upgrade to the guild.
It seems that stucked Guild Upgrade queues are preventing to use for example those Guild Banners what are already done.
Edit 1:
It seems that Guild Upgrade queue is working when character is in some town, like Divinity’s Reach. But when character is outside of town, a.k.a open world, Guild Upgrade queue is stucked.
