Hi there!
Thanks for reaching out.
I have replaced the Top2 module position with the Logo module position and added the required CSS classes there. You will find a screenshot in the hidden content section for reference.
For a better header layout, I recommend using the Menu and Logo module positions. Please refer to the documentation below:
https://www.joomshaper.com/documentation/helix-framework/custom-header
You may still need to make a few additional adjustments to fine-tune the layout, but the off-canvas menu is now visible in the mobile view.
Please check it on your end and let me know if you need any further assistance.
Best regards,
Rashida