Register as a stranger and take every path you offer.
You have never seen your own funnel the way a viewer does. You have a bookmark, a logged-in session, a browser that remembers everything, and the habit of clicking past the parts that are broken.
Take each path separately: the earliest session you offer, the latest, and the immediate option if you have one. On a phone and on a laptop, on a connection that is not your office. What you are checking is unglamorous — that the session starts when promised, that it plays from the beginning rather than partway in, and that whatever sits in the room with it still works.
Replay windows need a session that has already run, which is why they are almost never tested. Register for one, wait, and confirm the window opens and closes on the schedule you published rather than the one you intended. An open-ended replay you described as limited is a promise you are breaking every day without noticing.
Finish with a real purchase, refunded afterwards. Three separate things are being tested and only one of them is the charge: whether the purchase lands on the same record as the registration, whether access is granted without anybody intervening, and whether the receipt actually arrives. A card test in the payment processor confirms none of those.