Menu on smaller screens not displaying

Hi. I am having trouble with displaying the menu on smaller screens (tablets and phones). When i click the menu button, nothing happens, only the address bar displays the anchor link (www.example.com/#mob-menu). Is there a way to fix this?
I have tried deactivating all of my plugins, removing the custom CSS code, but nothing works. I have also tried a few “mobile menu” plugins, but with no success…
Thanks in advance.
P.S. I haven’t included a link since the website is still under construction and I didn’t get permission to do so. Sorry.

• This topic was modified 6 years, 11 months ago by hcpuros. Reason: bad title