Phals, and most rchids in general, require a simple "recipe" of things to keep them happy. Follow this list verbatim, and you should do well. I'd also cut off that keiki and repot it, as they mentioned before me.
1. Air circulation: Keep the air moving with a small fan
2. Water - 1x a week in the winter, maybe increase to 2x a week in the summer if very hot.
3. Medium - I recommend chip bark mix like you bought, as it'll hold less water than the moss and your phals are less likely to get root rot.
4. Light: East or west window, south only if you acclimate it slowly over 5-7 weeks bc south light intensity will usually burn phal leaves.
5. Fertilizer: 3 on, one off, meaning 3 waterings use fertilizer, then do 1 watering with just clear water to wash away any salt accumulation
6. Humidity: between 50% and 80% humidity is good for phals, they can tolerate a wide humidity range. They do like to me misted also, but don't mist the moss if you keep it bc it'll hold too much water.
That's about it! Good luck!!