Will my QR codes work if I do not subscribe after the trial period?

No, if you do not enter a payment method before the 30 days of the trial period, the account will be automatically deactivated.

QR Codes and landing pages that you create while on trial period will not work anymore.

You can reactivate your trial account after it was deactivated. The QR Codes and landing pages that you created while on trial period will work again.