1) That brings up another problem. Your site keeps serving me phone pages. There is no "My Account" in the upper right, nor does it appear in the hamburger menu:
Yes, the "click here" link in the refusal message eventually takes you to a link to log in. It's not visible on the SK article by default. You have to expand the "After I clicked a download link, the web page shows 'You are not entitled to download this file', or 'Insufficient Privileges for this File'." section. Three clicks to get to the login page, one of which is to expose a link which is hidden. Not a great user experience.
Ultimately, my point is it shouldn't be possible to get that message unless you are logged in, and the user you're logged in as doesn't have permission. Load community.checkpoint.com in a private browsing session and hit the "Create a Post" button. It doesn't tell you you need to sign in before creating a post, it just takes you to the login page. The support site should work at least that well.
If there's an official ticket system or whatever for website issues, I'll gladly open a ticket and put the weight of my support contract behind it.
2) I'll have to track down the specific SK where I hit that problem, but it just gave me a "You aren't entitled to see this" without the "To view this solution you need to Sign In" message. I noticed it when browsing from a machine I don't normally use, but the article did the same thing on my normal computer.