Can't checkout unity student free snaps bundle

I got Unity Student and I tried checking out the free snaps bundle assets you get with it but it says "use your unique code" in the coupon part.

I’m guessing that is the same "unique code" as my Unity Pro key, since I’ve received no other keys/vouchers but the code is invalid and I’m baffled why.

What am i doing wrong?

For me it took them like 2-3 days to email me the unique code. So just wait.

You can check unity sent email Welcome to the Unity Student plan! , you will find your unique code.