I cant make this up

I just opened a 65-79 rq pack with the flag challenges, where i managed to get a porsche 924 and a gunters ceramic event reward for the dodge. I still cant even compete in the ultra rare challenge while i have all the epics but 1. I have 9 epics total (1 dumplicate) and only 4 ultra rares with 2 of the being a 51 rq porsche. I cant make this up bruh i just want to try the ultra rare challenge, but i guess not. Maybe ill go for the last challenge.