Switching from solidworks 2022 to 2021

Hi, I downloaded solidworks 2022 for school but my prof just let me know that they're only accepting files created with solidworks 2021. Is there a way that I can either switch the version on my computer to 2021 or get a refund then re download the good version? Thanks in advance

Edu ​​​​​​​3DEXPERIENCE ​​​​​​​SOLIDWORKS ​​​​​​​Student Offers ​​​​​​​