Hi there,
Glad you reached out, happy to help.
Your menu on mobile is small due to the use of an iframe from another website (https://blog.poupfrite.biz). Can you confirm why you are using an iframe on your website?
Iframes are quite difficult to style and adjust, especially for mobile responsiveness, since they essentially display another webpage within your own.
To ensure you have full control over the appearance and functionality of your menu, we recommend using your own content instead of embedding another website through an iframe. This way, you’ll be able to customize the design and make sure it looks great on all devices.
I hope this helps. Please let us know how we can help further.
Cheers,
Eze