Why do my dart frogs hide so much?

[PRACE24]

I am very new to having these guys and I’m used to having animals that aren’t always visible but when I first got them the breeder said it should only take 2 weeks for them to get settled and start coming out more. It’s been over a month and I still see them in back corners hiding but I was wondering if there’s a direct reason why they wouldn’t be coming out?

[PRACE24]

Full tank view from front

[Philsuma]

It's totally normal for newly transferred frogs to hide and be hard to see for weeks of not months. Months. While other factors - lighting, hardscape construction, humidity ect all play a role, you just have to wait it out. Try scattering dusted fruit flies / feeding and then watch carefully to see the frogs. Patience is admittedly hard in this hobby, but that's what I recommend. very normal for frogs to hide for what seems like a long time.