1. You will receive a
BtaFile premium voucher like this: 9999azmlmferotsdr
2. You should be log in :
https://btafile.com/login.html ( If you haven't account at BtaFile, you just need to sign up:
https://btafile.com/?op=registration )
3. Make sure you are logged in. Then access this link:
https://btafile.com/?op=my_account 4. Put your voucher code in field "
Apply Premium Key", and click on "Apply"
