To access the CSS editor, launch your site customizer then click on the CSS tab to access the CSS editor. Check the ID of your calendar though, might be different number.
Hello, I solved this problem already, if someone has the same issue here’s what worked for me:
#mc_calendar_23_1-calendar-details > img { z-index:999 !important; }
I tried to apply this CSS before but only to the patent element (without img) and it didn’t work, doing this to img did not make sense to me, but its working 😀
Ok I solved it, for someone who has the same problem: reset checkout page (remove the old one ane set the new one at woocommerce –> status –> tools –> Create default WooCommerce pages).