Credits explained link leads to 404

New user and signed in for first time undecided about upgrading or using other programs instead. 
Unfamiliar with the entirety of adobe software and it's abilities and the limitations of this app- so I just went back to start exploring home page. 
I was wanting to learn how this app can benefit my work best and so I tried to find my profile settings. 
I selected my account menu tab in top right corner of the page with an animated picture inside a standard profile image circle. 
Note: this does not have a label indicating its a menu, I happened upon it. 
Inside my account tab  under the name and above the title link options listed; there is a box with a notice indicating 10 credits available to me.
under that is a  prompt to click a link stating "learn how credits work". 
With not understanding what that means to me, I attempted to follow the prompt to learn. 
However, this link leads me to 404 error code with "page not found" message as shown in my attached media.