Instead of manually typing the registration code, the user can click a "Link Device via Email" button.
A: Extremely unlikely. Most are either fake, already blacklisted, or require completing a “survey” that infects your device. Even if a code works temporarily, NCH will deactivate it during their next license audit.
Check official discount pages: NCH Software often runs 30-50% off sales during holidays (Black Friday, Cyber Monday, Christmas).