Hi there,
Can you please give a link to your site, and preferably to the specific post or page where the map block isn’t working?
If you don’t want to share a link in the public forums, please open a support ticket at https://jetpack.com/contact-support/?rel=support and provide the info there so our team can take a look.
Thanks for the links! It would be great to rule out possible plugin conflicts. Jetpack Map Block is using Mapbox so, I’d first try disabling the WP Google Maps plugins you have installed, to make sure they’re not the ones causing issues.
In general, a good first troubleshooting step is to deactivate all of your plugins (except Jetpack). If the issue disappears then reactivate one plugin at a time. Refresh your page each time you reactivate a plugin to see what causes the issue to return.