Hi @frandicicco
If the Handy Scan crashes after you scanned for a while, the most possibility is that the phone is out of memory. To solve this problem, you can do multiple scans. Here is a tutorial post: [Tips] What can you do when your phone is almost out of memory? - Multiple Scans
As for the laptop:
POP asks Windows 8 and above.
Best Regards
Cassie