Is there any way to retrieve lost activation code?

Dear Steinberg,
I am volunteering in a At-risk youth support center,
where we use music as therapy for youth with psychological issues such as PTSD and other social problems.
We have recently decided record an album with them, and for that we managed to get a new copy of Cubase 8.5 from one of the guides.
Today when I came to install it, I found out the activation code paper is missing.
I have the dongle with some temporary license that will expire in 20h, I have the box and everything, but we can’t find this sheet with the code.
Is there anything we can do to retrieve this code? Maybe through the dongle number? Can we find out if the code has been already used and where?

Wish you all good health, and thanks for your time,


Talk to Steinberg support.