Hello Mr John Holden,
Thank you for your answer.
We have already done that a few times.
My client says it doesn’t work in the Google app on iPhone 12 and 12 Pro.
We actually can’t figure out if it is related to the theme or wordpress or google or apple iphone. After deleting cache etc. The mobile menu isn’t working on this app.
Hope to hear from you for further steps. Thank you in advance.