Hello Geoff,
thank you very much for your reply and taking the time!
You’re right, I don’t have the plugins Event Tickets and Event Tickets Plus installed.
But I just made a test with a fresh wordpress installation and just two plugins, “The Events Calendar” and the “The Events Calendar PRO” being installed.
With this fresh installation the photo view worked like a charme, also on my apple devices.
I just can’t understand why it is not working on my other site although I have all plugins deactivated and a default theme activated. I will dive into it again… 😉
Greetings
Jan