Welcome to the Asana Community Forum @Heartsong_Live_Minis
For discounted plans have a look here: Asana for Nonprofits Discount Program: Asana discounts and support for nonprofits • Asana
Did you ho through this process and fill out the form?
I recommend reaching out to Asana Support and they will be able to assist
Now if you want to stay on the basic free plan you should be able to select that on the pop-up to stay with that.
If that does not work best to contact support