If you actually have a Brother label maker (the most common scenario), you can download the English manual (paper/digital PDF) and software here:
The name "Pai Touch" is very similar to "P-Touch", which is the brand name for Brother Industries' electronic labeling systems. pai touch english download
The app automatically switches to English based on your device’s system language. To force English: If you actually have a Brother label maker
If you absolutely must download from a third-party source, run the installer inside a Windows Sandbox or VirtualBox with no access to your main system. The name "Pai Touch" is very similar to