Why are the markers not displayed on the google map for mac, iphone?

Question

JavaScript

Good morning everybody!
there is such a site https://podkovacard.ru , on which there is a block with a map ("Our partners"), on which there are a lot of labels, custom labels and are set in the admin panel (Wordpress), for some reason they are not displayed on macs and iphone they are generally empty, everything works on other devices,
what are your thoughts on this? please share, the customer is not far behind)