I just thought I'd drop in here for a sec. All good suggestions on the humidity so far, but I read that you've only had them a few days. Going back to reference your thread on trying to get them to call...that will have some impact on it. Let them be for a while, and after the habitat's finished and you've let them get used to it for a month then you can try again and they might call for you.
They're probably not going to call in that habitat though. As mentioned, it's too dry, the water dish is too small, and there's not enough decor. Once it's more natural and better resembling something they could potentially breed in, and once they've gotten used to it over a period of time, THEN they might be more inclined to call
