Does the php-skins.com know that you are distributing their payware work within your free skin?
You also seem to be breaking the copyright law of the admin template you are using. The developer of ElaSkin has stated:
"ElaAdmin is licensed under The MIT License (MIT). Which means that you can use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the final products. But you always need to state that Colorlib is the original author of this template."