"Beeps 2 times" is an indication that Phomemo has a problem with detection sensor.
Phomemo needs to be repaired by diagnostic tools.
To watch this in a video, please see:
Repaire detection sensor by diagnostic tools for mac
Repaire detection sensor by diagnostic tools for windows
Please download the "Diagnostic Tool For Windows" from this link.
Please download the "Diagnostic Tool For Mac" from this link.