need some help,
one of my users is using iphone and for some reason can’t find the install to home screen on the safari anymore (he used to see it in the setting but not anymore).
In the “Action Edit…” menu, the bottom blue link in the second image, check if is present “Add to Home Screen”.
If the iPhone is a corporate phone, might have a limiting profile installed.
Does the install option appears in Chrome? What’s the default browser? Last release of iOS allows to choose a different browser (instead of Safari) as default, if this is the case, try to revert back to Safari as default and check if the option is back again.
BTW, reboot every time you make a change.