How to generate a unique PODS member ID (paid memberships pro)

1) Want a fixed 4 digit unique ID # per member: nnnn-2022
Used in all member products (created by E2PDF) e.g. ID Card shown.

Value: ID# [e2pdf-wp key=”pods_id”]-[e2pdf-format-date format=”Y”][e2pdf-wp key=”post_date”][/e2pdf-format-date]

– If I use [e2pdf-user key=”ID”] it provides a single digit number which is listed in both member and wp user lists. (If I update member plan, will the # change? I can’t recall but I think when trying this out in Member Press the number changed.)
– If I use [e2pdf-wp key=”id”] it provides a 4 digit number I want, but what is generating it? I cannot find the root so I don’t trust it won’t change later on. It has to be fixed per user. (Maybe it was this one that changed when I updated my testuser member plan).

SECOND PART

Can PODS create a URL link to a verification web page:
– page has a E2PDF viewer window displaying that is then populated with the users data
– according to the users id number in the URL – generates this without logging in to the site, e.g. value: [URL/verificationpage?]nnnn-2022

Any help is appreciated.
Thank you.