Hi Sirius,
since all other attempts to get this issue solved failed so far I am left with no other choice other than to directly draw your attention here on this forum.
After finishing the raid boss event I received the splash screen that I won the unit "Rasour, Broodmother...". Unfortunately, the unit is nowhere to be found in my inventory nor has the associated bonus been applied. I have a screenshot of that splash screen.
It has been over one week after I filed a ticket and so far nothing has been resolved.
With the upcoming war I would kindly and respectfully ask you to look into that matter.