22nd April 2020:
Nationwide has reported a fix and connections. If you are still have issues with adding/re-authenticating/refreshing your Nationwide account, please drop our team a support request here.
21st April 2020:
A service outage for the connection to Nationwide has been reported. As such, connection to your Nationwide accounts (adding a new connection/re-authentication/refreshing) will not go through. A fix is expected from Nationwide and we will keep the following page updated once there's updates.