Your card has one address: lonecto.com/@yourusername. That is the one to put in your Instagram, TikTok or YouTube bio.
The share sheet
Open the share sheet from your card and you can copy the address, send it straight to another app, or take the QR code.
The QR code encodes the same address, so it works on a business card, a flyer, a shop window or a packing slip. It is generated at a size that survives printing.
Share the address with the @ in it. That is the form that generates a preview with your name and photo when the link is pasted into WhatsApp or a social app. Without it the preview falls back to a generic Lonecto card.