I have a problem with the menu button on mobile phone on our website GlobalRize.nl. Our website is connected via WPML. On GlobalRize.org the menu button on mobile phone works, but not on GlobalRize.nl.
I deactivated all plugins except Avada core, Avada builder, and WPML Multilingual CMS. So a I think there is a change that the problem is the WPML Multilingual CMS-plugin.
I've just tested your Website hidden link on my mobile phone and I'm able to open the "Burger Menu/Navigation Menu" without issues as shown in the attached screenshot.
Did you sort it out yourself? Or could you tell me a little bit more about the issue that you're facing? Or perhaps you can share some screenshots?
This could be a "cache-related" issue and could you please try clearing your Website cache(SiteGround Optimizer) and then, restart your mobile browser and see if it works correctly?
I've just tested it again on my mobile iPhone 11 using Safari and Chrome and still, it works fine. I've attached the screenshots for our reference.