For some reason doesn’t work (black screen or error message (Adobe Flash, webGL))
If I open the link itself (https://walmap.ru/terrasa/) it works ok on phones. And we tried to place it in Tilda web site constructor it also worked ok.
Is it somehow related to some webflow settings?
Also tried fixed size for HTML embed. didn’t work.
Also tried to place it outside of the modal, it worked ok for the first time and then again started showing the same error.
I checked your site and it is working fine on my phone.
These days it is rare but please check if your device/browser supports WebGL or most probably check if it is disabled. Also check from other devices to be sure.