I gotta a feeling this "https" and "Cloudflare" won't apply to my sites.....

I got an e-mail from Homestead suggesting I register for free with Cloudfare, and then register my sites with them, and I tried, but get this error message no matter what I site I try and list.
 
I am going to assume, that the reason I am getting this error message is because I don't have my websites registered as a domain?
If this is correct, will my websites still be accessible to my customers? 
They mostly are for information.

Another question sorta unrelated to this situation.
One of my websites is password protected, I started noticing a drop-down box appearing when you try and enter a password, I will embed it below.

I appreciate your relpy's.
Sincerely,
NiceSeeingYou aka Keith