Hi There @impressalv
Thanks for writing in! Upon testing, it seems that you’re getting a JavaScript error which conflicts with your mobile menu. Could you please try removing all of your custom JavaScript added to your site and re-test this issue again.
Or it should be related to one of your plugins as well. Error seems to be related to testimonial slider that you’re using. Try disabling it temporarily and re-test your issue further. If not, you need to disable other 3rd party plugins as well to isolate the issue. If the issue resolved, then you can activate your plugins one by one to see which plugin causing the issue.
Let us know how it goes.
Thanks!