You have not registered the plug-in, so you can not use it.
Instructions for registration can be found here:
http://www.pushok.com/soft_how_to_register.php.To register, you need to know the account, which has a license.
In automatic mode, the registration happens automatically.
In manual mode, you must open the page
http://www.pushok.com/soft_short_info.php and create a trial license by
clicking the link "try now".
After that, your account will able to generate trial license keys.
To register in manual mode you should do following steps:
1. Choose registration type as manually and press button "Next".
2. Enter you login information and press button "Next".
3. The plug-in will generate program serial key automatically for you.
4. Copy program serial key.
5. Open link
http://pushok.com/user_view_programs.php in your browser.
6. Click on the link "Generate Key".
7. Enter program serial key in the edit box and click on the link "Next".
8. Copy license key.
9. Enter received license key to edit field in plug-in and press "Next"
button.
10. Registration complete.
You can generate license keys without assistance.