Quote Originally Posted by Mohamed Sultan View Post
I am at level 3 and upgrading to L6 stadium, the upgrade costs 3.6 M (16 days) but if I upgrade the seats the total amount will be 6 M.

You do the math.
You currently have two problems.

First, please read my guide to seat upgrades in my sig file so you can do your math correctly. Each seat upgrade decreases the cost of the stadium upgrade and the total is equal either way. Pictures are included in my guide as proof.

Second, your stadium is WAY too big for your level and will be for awhile. The maximum size of your stadium should be one level below your current level along with the large seat upgrade. If you are level 3, your stadium should be level 2 along with the large seat upgrade. All you have managed to do is waste money and/or tokens since your stadium is way bigger than your level's stadium cap.