No.
Legally, warranties are linked to the product itself, not to the name on the invoice.
The Zapptax model is based on an officially validated buy-sell mechanism, approved by tax authorities. The traveller purchases the goods in Zapptax’s name, and Zapptax immediately resells the items to the customer.
This setup allows Zapptax, as the reseller, to handle the tax-free process. The app then issues both a tax-free form and a resale invoice in the customer’s name.
As a result, the customer has a complete and transparent document trail proving ownership of the product:
The original invoice from my store issued to Zapptax.
The tax-free form generated by Zapptax.
The resale invoice issued by Zapptax in the customer’s name.