Made QR codes that never expire (no server dependency) - feedback welcome

Hey everyone, I built Ever-QR after seeing how many free QR code generators quietly rely on their own servers, then disable your code after a trial or push you into a yearly subscription.

The idea: encode the destination directly inside the QR pattern itself, so it never depends on anyone's servers and never expires. One payment of 5 euros, no renewal, no hidden fees, checkout through Stripe.

You get print-ready SVG, PNG, JPEG and PDF files, plus an optional email backup to recover your QR details later. Curious to hear from this community: have you ever had a QR code stop working after it was already printed somewhere? What happened?