HPTuners uses a proprietary credit system linked to your device's serial number and their central servers to "license" specific VINs. This server-side verification is nearly impossible to bypass via a local software crack.
Used for reading, editing, and writing (flashing) vehicle ECU/PCM data.
The downloads you find online claiming to be cracks are almost always malicious scams designed to exploit eager enthusiasts. The Severe Risks of Using Cracked Tuning Software