We have been using Google Calendar with a single account sign-on for the past several years to manage our boat reservations.
Recently Google tightened the restrictions on signing in from multiple locations/devices for security reasons.
If you encounter any problems signing into the ‘scrcreservations’ account, send your reservation requests here: firstname.lastname@example.org and they will be added to the calendar.
This is a temporary measure while we explore other solutions. Thanks for your patience.