Maintenance for the week of June 23:
• PC/Mac: No maintenance – June 23
• PC/Mac: NA and EU megaservers for maintenance – June 25, 12:00AM EDT (4:00 UTC) - 6:00PM EDT (22:00 UTC) https://forums.elderscrollsonline.com/en/discussion/679500
Its your internet connection most likely. Reboot all your modems and routers and what not and try again. If that doesnt help then contact ZOS for help because something is wonky and they need to fix it.