I had the same issue but found whilst using the inspect tool in my browsers that my site was showing an error. In my case it was a conflict created by the plugin looking for a http link where as my site operated on https. After installing a SSL plugin to fix mixed content the mobile menu plugin began to work normally again.
I’ve had a quick look at your site and can see the same mixed content error message I found on mine. Perhaps a SSL plugin to push links to https will solve your issue too?
I thought to look at this after finding someone talking about a java conflict on their site being the root cause for the mobile menu to error in the same way above.
I hope this helps.
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This reply was modified 4 years, 9 months ago by plonged.
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This reply was modified 4 years, 9 months ago by plonged.