I worked 4 days as a Union Extra on the 1986 Top Gun movie and each time I try to add that to my profile as uncredited it is rejected

I have an IMDB Pro subscription https://pro.imdb.com/name/nm0739479/?ref_=hm_prof_nme.

I worked 4 days as a Union Extra on the 1986 Top Gun movie and each time I try to add that credit to my profile as "uncredited" as requested, it is rejected.

Can someone help me receive this credit or show me how I can do it correctly myself? I am obviously doing something wrong.

Here is the youtube link of 5 ot 6 seconds of my screen time even though there are about 15 appearances, this one is the most featured: 

https://youtu.be/SNIz22fNpc8?si=aoJHu_FDL28KJ9JL

I have also included a screen shot. I am the one in the muscle shirt and the Bob haircut.

Is there a way I can finally receive this very small yet significant to me, credit?

Thanks for any assist!