ALLDATA 10.53 is a legacy version of the software, primarily known for being the last version available in a "portable" or DVD-based format before the service transitioned almost entirely to (the cloud-based online version).
If you need professional-grade repair data without the high cost of a shop subscription, consider these official options: Alldata 10.53 -FREE- Download
To protect yourself, memorize these red flags: ALLDATA 10