About Promotion Code

Today, I gave my promotion code COSPromoKCH22.
However, the code seems not proper.
Please let me know how to get the proper code.
My Korean teacher friends want to get Pro plans of Cospaces Edu.

Hi @Kyeong, the code you mentionated gives discount for new Pro plans. You should have also a CoSpaces trail code which you can share with a new CoSpaces Teacher.
This is mine COSASTERIAHU it is a simple composition of my names created by CoSpaces Edu.