This is how my self-serve portal looks at the moment:
How can I make it list the plan name, so it looks like in the samples in the branding settings?
Thanks for writing to us.
The reason it did not display plan name in the self-serve portal is because the plan amount is $0. In the second screenshot, since the amount is more than $0, the plan name got listed.
This is an issue from our end and our engineers are looking into it. We'll soon update you once this gets rolled out.
Hope this solves your question.
Yes, thank you very much!