CAST List

The cast list for my movie is incorrect. It is sorting based upon actors ranking on IMDB rather than the actual order of appearance and/or the actual leads in the film at the top of the list. This is a big issue because many streaming services and movie theaters are referring to IMDB for their cast list and the actual LEAD ACTORS in my film are not coming up correctly.  Under contract, we need to list them first. There is NO WAY for me to default to have them listed first. IMDB previously allowed us to rank the actors in the correct order. It appears this is no longer the case. Please help me fix this problem. thanks.