Q: Google Calendar sync, delegates not refreshing problem

I'm running El Capitan :-/ on a Mac Mini. I migrated all my stuff from another computer, so everything was set up for me. I had stopped using iCal on my old computer because it was glitchy and driving me nuts. I'm trying to use it on my new computer, but I've run into a problem. I notice that the calendars that are syncing from Google are showing up, but some of them are old ones I don't use any more, and new ones that I have made in Google Calendar aren't showing up in Apple Calendar. After reading how to NOW sync the calendars (they used to do it differently), I remember having to set up all that "delegation" stuff years ago to get things to sync. Google says to uncheck all of those in Calendar...Preferences...Accounts...Delegation. When I click on that, there's a phrase at the bottom "Refreshing delegates..." with the spinning thing (beachball of death). It NEVER ends. It NEVER refreshes. How am I supposed to unclick them if I can't see them? I figure I need to delete some cache, or uninstall and reinstall something, but I'm don't know if either are possible, are the solution, or how to do them properly.

Thanks