Why is the pen not working properly?
The pen is jumping on the monitor screen and not working properly.
crwdns2934109:0crwdne2934109:0
crwdns2889612:0crwdne2889612:0
0
crwdns2936751:024crwdne2936751:0 0
crwdns2936753:07crwdne2936753:0 0
crwdns2936753:030crwdne2936753:0 3
crwdns2942667:0crwdne2942667:0 5
