Menu shows twice on mobile

Hello,

I just used this theme for my graphic design portfolio and it is really nice. I just made the site live a few days ago.

Everything seemed OK yesterday when I looked at it on my phone. For some reason, there is the toggle which should be there and then the desktop menu display is there as well. It is only happening on mobile and tablet views. The desktop view seems to be OK.

When I look at it locally, it displays fine, but for some reason, it is not displaying correctly on the actual live site.

Can someone please help?

Thank you in advance.
Lisa

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