People CAN'T view my site!

Hi, so I just finished my website. I send it to some people and they said that when they would open the link - they could see my site, then as they were scrolling it would turn pure white and they couldn't click on anything or see anything.

My site is: http://thepurplerose.pureforum.net

As I am signed in as the Admin, I can get around my page just fine. If I log out - I know what they are talking about.

Can I get some help?

You have a huge size login popup enabled. Disable it or reduce the size.
General>Forum>Configuration
Login popup frame

I don't see anything that says Login popup frame?

I mean under the Login Popup.

It has these fields
activate:
Width:
height:
Message:

Thank you! It works!