Can't find Captivate 8 Download File

Dear Adobe Team and Users,

I got a serial key for Adobe Captivate 8, but used the Captivate 9 Trial Version until now.

Now that the Trial has ended, I want to use my serial key I got from a colleague who left the company.

Unfortunetly I can't find a download file for Captivate 8 on Adobe's website...

Is there still a chance to get this version?

Thanks in advance,

Kim