YakBot is a web app, so there is nothing for you to download. To activate your Professional account, do the following.
Click here to go to the special giveaway signup page.
Fill out the giveaway form on that page. In the GIVEAWAY CODE field, enter ILUVSHAREWAREONSALE on the field provided; make sure that it in ALL CAPS. Finally, click the REGISTER button to confirm. If successful, you'll get a message that says "Your YakBot account has been created successfully. Please check your email for login details.". Check your email inbox and open the email with subject "Welcome To YakBot". Use the login link to login using the login details provided.
Click here to go to the special giveaway signup page.
Fill out the giveaway form on that page. In the GIVEAWAY CODE field, enter ILUVSHAREWAREONSALE on the field provided; make sure that it in ALL CAPS. Finally, click the REGISTER button to confirm. If successful, you'll get a message that says "Your YakBot account has been created successfully. Please check your email for login details.". Check your email inbox and open the email with subject "Welcome To YakBot". Use the login link to login using the login details provided.