The selling already works. What breaks is everything after “send me your address”. That is the part a store is for.

Every order gets a page: what, where, which courier, what happened at the door, and whether the cash came back.
When the last one sells, the store says sold out, politely, in both languages.
Refusals and returns are recorded as what they are. Revenue means cash you hold.
Zones by district, a real fee shown before ordering. The doorstep is for handing over a package.
Register with an email. Fourteen days free, no card, nothing charges automatically.
Photos you already have, prices in dollars, both languages. Set your delivery zones by district.
The link now opens a real store. Instagram keeps doing what it does: getting you seen.
There is no importer from Instagram, because Instagram has no catalogue to import. What you have there is photos, and those are already yours.