Maintenance for the week of October 27:
• [IN PROGRESS] ESO Store and Account System for maintenance – October 30, 9:00AM EDT (13:00 UTC) - 6:00PM EDT (22:00 UTC)
Same happend to me a year ago, I sent a ticket in game and they fixed it in like 3 days saying they did some adjustments in my account. I couldnt use bank, guildtraders or access guildbank and bid on traders with my guild.