Hello,
Please follow the instructions in this documentation to activate debug in your site to see any PHP errors recorded that can provide insight on to whats going on. Please reply with a link to debug.log file. If you are not able to do this please send us FTP access to your site so we can do this for you.
Could you try clearing your browser cache? On my side on Firefox:
We didn’t do such changes in any of latest updates.
Users can always see which month they are on above the map:

No wait, please try this CSS code:
.evocard_main_image { pointer-events: none; }
But i still want to know how disable the image magnify.
Thank you for your great suggestion, at the moment it is not supported. However please create a new ticket and select Feature Request as category so others can vote on your idea and get it moved into development faster.
Hello,
Please go to EventON > EventCard > try a different Feature image display style.
We are glad your issue is resolved, if you have any further questions or concerns please create a new ticket.
If you have a moment, we would greatly appreciate if you could kindly leave us a review at myeventon/my-account!. Cheers!
We are glad your issue is resolved, if you have any further questions or concerns please create a new ticket.
We are glad your issue is resolved, if you have any further questions or concerns please create a new ticket.
If you have a moment, we would greatly appreciate if you could kindly leave us a review at myeventon/my-account!. Cheers!

Uh, my bad. That fixed it. I was desperate and tried too many things … Thanks!