Why is the menu button on mobile phone not working?

[teacup3]

I browsed the old thread about this and tried the slolutions mentioned but nothing seems to work. Can someone take a look? Hamburger on mobile phone was working last week. Just noticed today it doesn't show the drop down when clicked. 

I switched to a few standard themes but that didn't fix the problem.

[cbake]

Hmm, I don't think there are any edits to the theme. I just updated to a standard theme recently because that was the recommendation I have seen most often. What makes you think this is a custom theme?

I have made edits to the html on past themes I have used. None of that code would remain after I updated to a new theme would it?

Thanks again

[Bernadette3]

It shouldn't, no. Although, it is possible we are not able to see current information. You can confirm the theme you are using by clicking Theme > Change Theme > Custom. If you see one that says "using" then your theme is custom. 

[aztopdavid]

I'm helping a friend update their Weebly-based church website that's hosted at iPage, and have run into the same "mobile menu not working" problem. The site is: https://stanthonydhs.org/

I have a Weebly pro account, so I applied the same standard theme that they're using (CleanLines - Event) and the mobile menu works on my subdomain testbed site, so I'm now comparing the code in each of the files available through the Code Editor, but I haven't yet caught any discrepancies between the files in my Weebly-hosted site and theirs.

I've seen that there are multiple topics similar to this one, and people have hinted about finding differences or ommissions in the code, but event in the "Solved" topics, I've not seen specifics of which code in which file(s), so I hope someone might point me in the right direction. I suppose I could export the theme from my site and import it into theirs as a step in the troubleshooting. Might that solve the broken mobile menu issue?