this site does not supply identy information Your connection to this site is not encrypted. how do i fix this so i can log on to the site that i need to use?

this site does not supply identity information Your connection to this site is not encrypted. this message keeps coming up every time i try to log into this site using my username and password for the site. I can connect to it from my desktop but i cant connect to it from my laptop. Please help with this problem if anyone can.