Website is glitching and showing a page that's not mine

Hey guys this glitch has been really bugging me. Right now my link is:

https://www.purecure.info

hosted with fatcow.com

Now I’m not sure if you take out the “www.” in the URL it changes the page or not cause some times I feel like it does and some times it doesn’t.

If you go to the link and keep refreshing the site some times you’ll get the site I actually set up and some times you get a page that says, “Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!”

I want to remove that all together so it just shows my website 100% of the time. I deleted all blog posts and comments. I have set a static home page. I contacted the host to forward the non “www.” domain to forward to the same domain as the “www.” one and nothing has worked. I deleted all the themes except the one I’m using. Everyone I’ve asked said they’ve never heard of that.

Just keep hitting F5 to refresh the site or keep pressing enter or switch it up until you see the different page come up that I don’t want. The mobile version of the site shows that page more often than the desktop version.

Thanks for all the help!