The 24/7 thing must be the ones in your area and maybe other parts of the country. My understanding is Curves is a franchise and owner operated, Prehaps the problems they ones in your area are experiencing is related to those specific owners.
I was a member at our local one twice, both times i've quit because of my foot and ankle problems. They are also not open around the clock. Hope your able to find out what is going on, my advice would be to ask. You won't know unless you do.