Code Native Error "The application has stopped"

[nhansinh.pro]

Hello,
I am using your “Native”.
I am having a problem.
When I bought in-app to remove ads, the purchase process was a great success.
However when coming back out again. Notice appears: my app has stopped.
Picture attached.
How to fix it?
Best regards,
Mr. Sinh

[kopris2003]

Hi,

Please, check your private message.

Best regards

[nhansinh.pro]

Hello,
I have answered your private message.
But the sending process failed.
Can you give me your email address?
Thank you

[kopris2003]

Hi,

This is my email address: brommko@yahoo.com.

Best regards