Hi Steven

I have checked/tried 1, 2, and 3 from your suggestions without making progress.

I have been in contact many, many times with the web host (Netregistry) and they refuse to entertain the idea that the issue is with their server setup and insist that I should contact Apple, because it is a problem with iOS/browser (even though iOS/Safari renders the gallery just fine when the site is hosted with Zuver, the host I have my own server/test environment with).

So unfortunately, this remains unsolved and I am not inclined to spend any more time on it, rather I will tell the client he has to move web hosts and battle it out with Netregistry for a refund.

thanks for your attention!

Seasons greetings!

Here is an example of a gallery on a client site https://www.sunsoft.com.au/umbrellas/ It works as expected on my windows desktop and android phone, however the gallery won't open in Safari on iPhone (404 error)

Here is the same page on a development server as exported from the client site using All-in-one WP Migration the other day https://dev5.computerkarma.com.au/umbrellas/ It has no such issues with iPhone etc

My belief is that the site has been working properly for many years but only recently has encountered problems after the webhost (Netregistry) upgraded their webservers.

So, something with the server configuration....................any ideas?