Another update - from CamScanner's website: https://www.camscanner.com/payment/price

It seems there's either a basic account or paid account. There's also a free app and paid app. Unclear the difference, though I assume it breaks down to really 3 levels: basic account with free app, basic account with paid app, premium account. Where the premium account gets everything included in the paid app plus some. The paid app I assume gets only the benefits of basic account with free app plus the benefits of ad-free, no watermark, OCR, and 400 MB of cloud storage instead of 200.

Seems strange though