Mobile menu does not work

Mobile compatibility is theme-dependent.

What theme are you using?
Where did you download it from?

I am using the Vision – Mult-Purpose WordPress Business Theme downloaded from themeforest.net

Sorry, but you’re using a premium/paid theme not supported in these forums. It’s best to go to the support site where you bought the theme – https://themeforest.net/ – for help with customizations and issues. You paid for support when you bought the theme, so you should contact the people who sold you the theme.

These forums are for free themes available in the WordPress theme directory at https://www.ads-software.com/themes/. See https://codex.www.ads-software.com/Forum_Welcome#Commercial_Products

Thank you