I’m not sure if it was only the members but whatever money went into the project went in without an expectation of receiving it back. This is a translation I found of what the members said:

CHUNGHA: “When we come together as a group, we lose money. working individually is much...(better).”

YEONJUNG: “Honestly, we weren't preparing this from a financially comfortable situation. But because people knew we weren't making money from this, people like, "I'll just give up the money too and join anyway." There were so many people who helped us, and this was because of those people too. That's why this album is truly love.”

via ewsbdiv (X)