Although it was not directly mentioned, Korean media outlets point out that the agency judged that it was difficult for members SinB and Umji to carry out normal schedules as they are still mourning the passing of Astro's Moonbin, who they are close friends with.
Koreans showed their support and concerns over the members saying:
- Let's rest well girls ㅠㅠㅠㅠ
- Aigo ㅠㅠㅠㅠ rest a lot and I hope you will be able to overcome it..
- Don't think about anything and I hope you can rest.
- Have strength ㅠ ㅠ
- It's okay if you come out slowly ㅠ
- I hope the company takes care of them..
- Two of the three were friends [with Moonbin].. please understand it and I hope they will be able to be happy
- ㅜㅜ I'm worried. I hope you can calm down.
- Eunha seems to be having a hard time alone and I'm worried because of her schedule last time, but I think it's good that she decided to rest after all.
Source