Once you get your Mixcraft purchased code (XXXXXXXXXXXXXXXXXXXX) from SudeepAudio.com, redeem it step by step as given here
Redeem Code Instructions:
STEP 1: Go to https://store.acoustica.com/login
STEP 2: Create an account or login to an existing account.
STEP 3: “Redeem” your code from – https://store.acoustica.com/redeem
STEP 4: Your redeemed code will be in the format: XXXX-XXXX-XXXX-XXXX
STEP 5: After redeeming your code and while logged in, browse to your library.
STEP 6: Your registration and downloading information for Mixcraft DAW (latest version) will be seen in your library.
A purchase code (sent by Sudeep Audio) can only be used once. If you receive the error code “Purchase code has already been redeemed.”, please login to your account and look for the order on your orders & demos page.
If you have any issues, please contact Acoustica support.
How to register Mixcraft