FAQ
Questions about products, delivery, payment, and support.
Practical answers about what Treqavox sells and how the current digital-product flow is intended to work.
The products are PDF-based digital learning materials. Delivery follows the checkout and access process associated with the configured product payment link.
Each product is described as a PDF Guide. You can keep the document as a reference and open it with a compatible PDF reader.
The products differ by level, technical scope, module list, reading depth, and role in the overall Java learning path. The catalog and product pages show those differences before purchase.
Start where most prerequisite terms are already familiar. Starter guides focus on fundamentals, Intermediate guides deepen core Java and practical libraries, and Advanced guides move toward concurrency and backend structure.
Prerequisites vary by product. Product pages list who the resource is for and the expected background in the Fit & Outcomes section.
The free product is a compact entry point. Paid resources cover broader or deeper areas of Java and include longer module sequences and more structured learning components.
The existing flow redirects from the product page to loading.html and then to the configured external hosted payment link. No payment SDK is embedded in the static site.
Confirmation depends on the external checkout and delivery setup connected to the payment link. The website itself does not simulate a payment confirmation.
Contact Treqavox support with the relevant product and order reference so the duplicate-purchase situation can be reviewed under the Refund Policy.
Contact support with the product name and your order reference. Do not send full card details or other sensitive payment credentials.
Use the Contact page and include the product name, order reference if available, device/browser context, and a concise description of what happened.
Refund requests are governed by the Refund Policy. Review that page for the current terms, including treatment of digital delivery issues and duplicate purchases.
The guides are PDFs and are intended to work with common PDF-capable desktop, tablet, and mobile devices. Exact behavior depends on your operating system and PDF reader.
Compare the level, short description, role, modules, audience, outcomes, and reading estimate. If you still need help, use the Contact form and mention the products you are comparing.