Here is instruction to activate your Wfile.net Premium Key!
1. You will receive a Premium key / Premium code like this: 2gd32wd1fd35xds
2. Login to your Wfile.net account (You should register your own account, if you dont have it, https://wfile.net/)
3. Go to Profile page. (https://wfile.net/account/).
4. Find Apply Premium Key field
5. Put your key here, then apply it.