Mobile landscape displaying on portrait on iPhone 11 ONLY

Hi everyone,

I’m having a really strange problem with the mobil version of my site. Everything is pretty much ready to publish and I’ve been bug checking with various phones and everything turns up fine EXCEPT for on the iPhone 11.
For some reason, when viewed on an iPhone 11 in portrait, it displays the mobile landscape version, but on all the other iPhones I’ve tried it works fine (iPhone 7, 8 plus, X, and 12). Have I done something wrong, or is there a bug in there somewhere?

Any help would be massively appreciated!

Here is my site Read-Only: LINK
Published version on staging website:

Never mind everyone. It seemed to be a problem with just the one iPhone, which then fixed itself as soon as the official page was published.