Hi @prayag922 !
Are you having trouble loading your menu on the web browser on your mobile device or on the WordPress mobile app?
If it’s on the web browser on your mobile device, that would not be an issue with the mobile app. For issues concerning your site in a web browser, please post your question and/or search for answers in the general WordPress.org support forums here: https://wordpress.org/support/forum/miscellaneous/
Of course, if you have questions related to the mobile app, we’re happy to help!