Use this guide to understand what happens to your API requests after the expiry of your free trial/subscription to the web application QR API.
Initially, when you Sign up for the QR API tool, you get 20 Free API requests to test the tool. Now when the first 20 requests are utilised or the free trial period expires, your API key will become invalid. This also happens when you are subscribed to any plan (BASIC, STANDARD, PRO, ENTERPRISE) and the plan validity expires.
Now, when your system or mobile app sends an API Request with an invalid key, a QR Code image with a preview watermark will be returned.
See the sample below:
Such QR Codes are unscannable by most QR Code scanning apps.
To activate your API key, log in to your account and start/extend your subscription.
If you still have questions related to this topic, feel free to reach out to our customer relations team at email@example.com