Mobil theme showing on desktop for all browsers except Chrome

Hi,

A link to the website would have been helpful. That issue in most cases is related to the caching used. What caching are you using? We recommend the super cache with these settings https://tagdiv.com/wp-super-cache-plugin-install-and-configure/ The super cache has a dedicated setting for using a mobile theme.

If it is not possible to use the super cache, check if the cache plugin you are using has any similar settings, for using a mobile theme.

Thank you!