Mobile view going to wrong website

I have 3 WordPress websites on 1 server on Go Daddy. My most recent one was working fine but yesterday suddenly the mobile version of the site started going to the mobile version of a different site I have hosted no the same server from my iPhone

The normal browser version goes to the correct site, just the mobile version is now redirected. The only thing I can think that I did was check the “WordPress should correct invalidly nested XHTML automatically” box. I’ve since unchecked it but the mobile page still goes to the wrong site.