Mobile Website Menu not Working on iPhone Only

[Acorn]

I looked at the mobile menu and saw no overlapping... I turned on the wire-frame view and still, there is nothing there showing overlapping. I'm not sure how you're getting that result... the menu words are the top item in the top layer. (scratching my head...???)

it's nothing to do with wireframing. I used the CSS Debugger option in my browser (Vivaldi has it built in; others are probably an Add-On 'CSS Debugger').

It doesn't matter what you see, it is what you can click.
If you click an item and it just closes or if you click the right-most edge of the last letter and it does then you know there is someting in that vicinity.
If after you successfully click to another page and all works after that then the something may be a copy of the menu with the wrong link values on top of the proper one.

Without you design, i can only report outcomes.
Check you don't have a double hamburger.

Also if I am getting this on a PC then the iPhone part is a red herring.

Clone the design file to a different name.
Delete the content of the Main pages but not the menu.
Even delete some complete pages (Main & Variant).
We don't need every page, just index and a couple more...

...your republished site seems to be working correctly.
Now you need to advise your client to purge their browser cache (Ctrl+F5) and recheck.

Acorn

[sorengen]

Ahhh, well, if the republished site is working correctly then I guess there's nothing else I need to do. (Previously, even after clearing my browser cache, the site was working fine for me - desktop and Android phone... so I wasn't able to see any issues. I'm glad it is working now.) I will have my client check for themselves for their satisfaction. Thank you so much for taking the time to help. I really appreciate it! Thank you, Acorn.

[Acorn]

Ahhh, well, if the republished site is working correctly then I guess there's nothing else I need to do. (Previously, even after clearing my browser cache, the site was working fine for me - desktop and Android phone... so I wasn't able to see any issues. I'm glad it is working now.) I will have my client check for themselves for their satisfaction. Thank you so much for taking the time to help. I really appreciate it! Thank you, Acorn.

The thanks surely must be @Egg as he advised purging your server.

Acorn