Hi,
Sorry for the issues you are having I can help troubleshoot this with you.
First I noticed you are only Events Calendar 3.10 can you please update to 3.11 for all the plugins and see if that helps the issue.
If auto updates are not setup you can get the latest version of Pro from your account here on theeventscalendar.com
If that does not help can you please provide in a private reply a couple links to the broken maps and a couple that are correct.
Let me know and we can go from here.
Thanks