Display CBSubs expiry date in CB Lists

The subscriptions are managed by "points" in a field that you helped with in another forum post.(thank you). They are "free".
The odd part, and is probably related, is that when I click on the link "Url of plan to display only this plan ('-' to display multiple plans)" the system prompts me to login. The plan(s) allow for all public access under the Access settings of the plans. The fields and the tabs are public as well. I am stumped as to why the system prompts me to login to get to the plan.

Ensure CB Paid Subscriptions itself is public in CB > Plugin Management. Aside from that I don't know. You'd have an access permission problem somewhere. As for the expiration date substitution not showing do they have actual subscription rows in CBSubs > Subscriptions? My guess though is this is purely a plan access problem. Do you have conditions on your plan?

Ensure CB Paid Subscriptions itself is public in CB > Plugin Management.
it is public
do they have actual subscription rows in CBSubs > Subscriptions?
yes
Do you have conditions on your plan?
yes 1 in the "workflow"

The user probably doesn't meet your conditions requirements which is why it won't display. This will apply to public users as well which since they don't have any fields will always fail that check.

To be clear, the user does see their subscription in the subscription tab of their user profile and with the custom certificate I made.
What I want to do is display their expiration to other users in a user list. I also need their expiration date to be sent to them via ACYMailing and so far all I am able to to see for their expiration date is the number "1"
It just seems really odd that it works in their user profile and on the certificate (substitutions) and not in the list or ACYMailing

It just seems really odd that it works in their user profile and on the certificate (substitutions) and not in the list or ACYMailing

That is pretty odd. Try temporarily removing the condition on the plan and see if it now suddenly displays. If it does there might be a access permission problem happening with the substitutions functionality.