"Add to Home Screen" option on iPhone not working on InDesign 17.4

For my web-app business using Publish Online, the ability for clients to add one of my web-app docs to their mobile homescreen is a real selling point.  However, yet again it appears Adobe have made changes, but this time even more catastrophic than just lost productivity.  Now, it appears to me they have messed with the 'Save to Homescreen' url.  So when I'm on my clients' iphone, showing them how they can save the web-app (that I've just billed them for), to their home screen - I NOW CAN'T!  So instead of creating an icon on their homescreen with the document url, it swaps this url for Adobe's own indd.adobe.com!   Is it that Adobe want to promote their Publish Online product and are happy to kick my document out of the way to achieve this.  I'm very frustrated because this is a CRITICAL ISSUE for my business (see image).

I'm sick of wasting time with these type of issues, previous to this they'd thickened the Nav Bar on the Publish Online mobile interface - which will cost me at least a day to fix.  Before that someone decided documents should have a nice border around them, totally trashing the look of the web-apps I'd created for clients.  A great pity because the product itself is superb apart from these really annoying issues.

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