New website gets old websites pages?

I’m working on a new website, is working fine, but after a few clicks or more a previous website with a different URL starts appearing. I’ve checked my web host using Forklift, where I have 4 or 5 projects, I’ve tidied it up a bit now - will that solve the problem?

tyzack.co (sorry the forum wouldn’t let me post the link?)

Thanks,

correcting my post: The new website continues, but the URL switches to the other URL: Thelandgallery etc and an error page appears…

Did you try deleting the browser cache?

Have tried that, but same problem. My other site: http://www.thelandgallery.com also has same problem?