iMazing also offers several types of subscriptions to fit various needs:
What (e.g., iMazing 2 or iMazing 3) are you running? Are you using Windows or macOS ?
iMazing offers a robust trial/free version. Many basic features, such as browsing device files or transferring specific data types, can be done without paying for a premium license key.
Ensure you have a stable connection. iMazing must communicate with its servers during the activation process.