Accept multiple missions of the same type.
Build craft capable of delivering payload(s) to each individual orbit required.
Launch and reach orbit of first mission.
Release payload at it's designated orbit.
Check the remaining missions and see that the remaining missions are failed.
This is not the first time this has happened. This happens any time I'm playing and I have multiple missions with the same payload. This happens even when I have more than enough payload and fuel remaining to complete the remaining missions.
I'm playing on Google Pixel 6 Pro - Android 14
Did you assign the extra payloads to their contracts?