I agree. If they aren't interested, they aren't interested.
Is this your first time breeding? I know you asked about the cool side before...
Have you seen them lock in the past? Has the female ovulated already? Is she going into shed?
It really can be anything for right now. Just observe and see.
Either she lays or she reabsorbs if she's refusing to lock.
As Bogertophis mentioned as well... Other reasons can be why as well so make sure temps and humidity are correct.