Course links open in browser

When I share routes by providing a link to the course, when friends on iOs open the link, it opens in their browser, not the Garmin Connect app.  For me (& other friends) on Android the same link opens in the app.

I share routes by copying the URL from the web site.  It appears that the URL has changed recently.

It used to be connect.garmin.com/.../{courseid} 

But now it is connect.garmin.com/.../{courseid} 

The old links (with /modern/) still open in the app.  The new ones (with /app/) open in the web browser.

Is there a way to make iOs use the Garmin Connect App for these new links, or does this need Garmin to make an update for the app.

Thanks