Google only allows a single sync connection to a given app. If you have multiple CoachAccountable accounts, this can be problematic! Specifically, if you have one CA account synced to your Google Calendar and then sync a different CA account to that same Google account, Google will sever the first sync connection.
Fortunately, there are a couple of workarounds: merging multiple CA accounts under the same username. Calendar sync connections follow the user, and so a single calendar connection under a single username can service sync operations from a multitude of CA accounts (e.g., your personal coaching account and your coaching account with a larger organization).
Accounts merged under the same username allow you to access each account with a single login. The only constraint is that the user-level details are shared among accounts, meaning your email address, avatar, name, and contact info must be identical between the merged accounts.
If that constraint works for you, then merging is a great idea both for the convenience of a single login AND to have a single Google calendar sync serve both.
To merge your accounts, first, make sure the email addresses in each are identical. Then, send us an email at support@coachaccountable from the email requesting a merge, letting us know which username you'd like to keep going forward.
If you must keep separate email addresses for each account, you'll want to share the calendars associated with each email address with one another. You'll then sync the respective calendar with the account associated with that email address but be able to read availability from both.