[Plugin: Events Manager] Change search daterange to search only by month.

did you try to use EM Settings > Formats/Layouts > Date/Time formats > Date Picker Format ?

Yes, but it didn’t change the datepicker :S

works fine on my test site; have you tried to disable other plugins or temporarily switch to default theme?

Yes, but nothing. You have your site live? Can I see it?
In my site if you choose a day, just write the month as I setted but appear the whole monthly calendar on datepicker, not only the months.

By the way, my dateformat is “yy-mm”

https://demo.wp-events-plugin.com/events/

don’t think this is possible with the jquery datepicker, you’d have to create your own custom solution here.