Hey there Steve,
Hope you are well today!
on a mobile device my pages are not responding.
If by this you mean the menu on the site doesn’t work, and don’t show the pages – you are right and I am getting the same behavior.
Please check the link to the screenshot. ??
https://i.imgur.com/yNJoGohl.jpg
The reason this to happen is because of JavaScript error, triggered by the file gumm-custom.js
in your theme.
Probably the reason for this is because there is plugin conflict.
I noticed for example you have Layer slider installed.
What you can do is to run a plugin conflict test.
You will need to disable all your plugins, then check if the menu is working. If so – you can enable them one by one, and test after every plugin enabling if the menu is still working. If it stop after some plugin you will know this is the culprit.
If that doesn’t helps you can contact the theme developer at his site – https://antonibotev.com
At least this is the information he leaved in the theme files, and since this theme is not publicly available we don’t have access to it.
Hope this helps.
Thanks,
Ivan