Hamburger button not working in tablet or mobile mode

Hi. My menu is working fine in computer mode, but the hamburger button does not appear to work in tablet or mobile mode. Website is www.lutondiving.co.uk. Any advice, please? Thanks.

Hi there

Hope you are having a good day and thank you for your question
Please deactivate all third party plugins and try again your problem, most probably this I conflict with third-party plugins.
Once you deactivate all plugins please check your problem again, if the problem is gone then this means it was a plugin conflict. Now, start activating plugins one by one and same time repeat your problem until your problem appears again, now you know which plugin was in conflict Thanks!
Colorlib Support Team

Yep - that did it. Problem solved. Thank you!

Hi there,
I’m glad that got to help.
Please feel free to reach out once again in case of any more questions.
Best Regards,
Support.