The mobile menu doesn' work

Hi Theme Support,

I just found the menu on my mobile phone doesn’t work correctly. When clicking on it, no sub-menu appears. Could you help me fix it, please? Also, please find the attached image for the place I referred to. My website is:
Thank you, and Happy New Year.

Best regards
Charles Zhuang

Hey there

Sorry about that, this problem is already reported, as a temporary solution our customers used WordPress menu plugin