Legal Notice / Imprint

Last updated: September 23, 2026

This page identifies who is legally responsible for GreenWattWise Lab and for the digital products sold through it, as required for consumers in Germany, Austria, and the wider EU.

Seller

Ernesto Ortega Díaz
Sapphogasse 12/9, 1100 Wien, Austria

Contact

Email: greenwattwiselab@gmail.com

Business status

GreenWattWise Lab is operated by Ernesto Ortega Díaz as a private individual, not through a registered company.

Business registration number: Not applicable — not sold through a registered business.
VAT identification number: Not applicable — not currently VAT-registered.

Gumroad, the checkout provider used for these products, separately collects and remits EU consumption tax (VAT) as merchant of record on qualifying sales, independent of the seller's own VAT-registration status. See Terms of Sale & Digital Product Terms and Gumroad's own terms at gumroad.com/terms.

Responsible for content

Ernesto Ortega Díaz

Dispute resolution

The European Commission's online dispute resolution (ODR) platform was permanently closed on 20 July 2025 and no longer accepts complaints, so no link to it is provided here. See Withdrawal for how to raise a problem with an order, and the Contact details above for direct support.