A: Thanks for the query. If you purchase one additional code, you will be upgraded from tier 2 to tier 3. The daily credit will get increased to 2100 credits per day in total. As a tier-2 user you have already received 220k instant (lifetime) credits. Once you activate the 3rd code, you will receive additional 140k instant (lifetime) credits to make it a total of 220k+140k=360k credits. We hope this helps. Have a great day.