What should I send to Support if my purchase or installation isn't working?

The more complete your first message is, the faster we can help. According to Protectstar, technical support cases should be submitted through the support form; the phone number is explicitly not intended for support or consulting.
The most helpful details are:

• exact app name
• source: Google Play or the Protectstar website
• screenshot of the exact error message
• device model
• Android version
• whether you open the APK from the browser or the file manager
• whether Play Protect, Advanced Protection, work profile, device management, or Samsung Secure Folder are involved

For purchase problems, your order number or proof of purchase and the email address used for the purchase are also very helpful.