M.domain.com Redirection Cs-Cart V 2.2.3

I had to move a site for someone with minmal access.

the main store runs now, but i'm stuck with the mobile redirection. (and i'm new with CS cart)

i've made a redirect from m.domain.com to domain.com, but that does not do the job…

Can someone help me out here with this issue?

Thanks in advanced.