If I understand correctly, the accordion menu links on your site open up an email instead of the relevant menu page, correct?
However, they open fine at my end, you probably have to try clearing your phone browser's cache, and then it should work.
Let me know how it goes.
Ankushr is right. All working as expected here too.
The only thing, which irritates me: Is it on, purpose, that you are using system fonts in your menu? The will be necessarily converted to images during output. Why? Read my post 4 here: https://forums.adobe.com/thread/2357163
Thank you both for your replies.
I managed to fix it without understanding why - but forgot to post a reply.
I rearranged text email links, moving them much lower in layer 1 - the menu remains on layer 2 in the Master page.
All I can assume is that there was a conflict between the hotlinks as they were the highest elements on layer 2.