Replace the sample products
Sample products fill a new shop so it isn't empty; they carry a Sample badge and can't be ordered until you replace or keep them.
On Products, tap Replace samples in the notice — the list now shows only the samples.
Open a sample, put in your own name, photo and price, and tap Save — it becomes a real product.
Delete the samples you don't need.
Happy with them as they are? Tap Keep all samples as real products — check the prices first.
Tap Show everything to see all your products again.