Is Copy Protection Option on android market make application to uses the User Data of device?

I have uploaded the Application with the Copy protection to that application. I have also given the Android Licensing to that Application.

Now After do开发者_C百科wnloading that application from android market, I got some problems like :

1) User is not able to start the application after restarting device 2) If user have to start again that application then he/she have to clear all the Userdata from user setting.

Now i dont know why it ishappening ? Is Copy protection option of the market will make application to use the User data of the Device ??

If anyone know about it then please let me know about it. Thanks.