I believe my reply was not accurate. Let me rephrase. I can see the entitlement in the source, labeled the correct name. This is the name I wish to use for the email template.

If I then move into Access Model > Entitlements, then select the entitlement, and focus on the URL, this is where I see the Id that’s being pulled into the template
…/access/entitlements/landing-page/details/63334c7d39224474abc1dad3781a1340
I am new to api calls, so would need to ask our inhouse dev team for assistance on this. I will reply with the api response once I am able to make the call.