Not necessarily the pod at fault
If chlorine bleach is added to the wash water too soon, before a certain body secretion has washed out, the bleach will cause a stubborn yellow/orange stain. I don't know why. Sometimes it comes out slowly with repeated washings, sometimes not.
For the future: Your front loader probably adds chlorine bleach to the wash water at the very start of the cycle. There is a work around. If your machine offers a pre wash, use it. Then you'll get some wash time allowing the detergent and enzymes to work first before the Clorox goes in. Some front loaders avoid this by adding the Clorox to the first rinse, but then the bleaching time can be too short. If you have a top loader, add bleach 5 or more minutes after washing begins.