In short
Check My Adverts, payment status, then Feedback if it never appears.
New and edited adverts can take a short time to show while payment clears and/or the listing is checked.
- Open My Adverts — if it appears there but not in public search yet, wait a little and refresh.
- If payment is still pending, finish checkout; unpaid listings stay incomplete.
- If PayPal (or other) payment shows pending/held, images and public publish can wait until the payment clears — see I paid but can't add images.
- Still missing after a reasonable wait? Feedback with the advert title and approximate post time.