Sorry about this, guys. We have been through a few different server maintenance times like Benjamin was mentioning, but since switching servers, we’ve found that a lot of our members haven’t been able to automatically log in.
If you’re on Windows, try resetting Internet Explorer back to default settings:
https://support.microsoft.com/en-us/help/923737/how-to-reset-internet-explorer-settings
On a Mac (OSX), iPhone, or iPad (iOS), you’ll need to manage and remove Zwift’s KeyChain entry.
OSX: https://www.macobserver.com/tmo/article/icloud-keychain-removing-individual-entries
iOS: https://www.wikihow.com/Delete-Saved-Passwords-from-the-iCloud-Keychain-on-iPhone-or-iPad
Once Zwift’s entry is deleted, reboot your Zwift Device and log in one more time. This time around, it’ll save the new server path and should allow autologin to begin working again.
If none of that works, please email us at support@zwift.com so we can research the issue a bit more.