Well it appears our issue has resolved itself. The maps now load without errors. Maybe it was just a timing issue.
We also took your advice to add the API to Tribe Events and added the pagination back. We already had a billing account with Google, so that wasn’t the issue – but good point.
We are on a shared server and sadly the ISP (HostPapa) does not allow us to increase the PHP limit – in fact they’ll halt our service if we raise the limit!
We’ve been trying to optimize the site and perhaps this added to our difficulties (WP Disable, WP Optimize, WP Rocket)
Thanks for quick response!