Reed frogs

[WindedFatnNasty]

Hello,
I recently purchased 6 reed frogs from the columbia repticon on Saturday. For some reason, I have lost two of my six frogs already. Im thinking it was poor judgement on my part for purchasing them because im certain they were wild caught. My question is, is there anything I can do to try and save my remaining four frogs? Ive only seen one of them eat and they are all really skinny. I keep the temp at 75-80 degrees during the day and let it get to 70 degrees at night. Ive been misting the tank once in the morning for the two days I've had them. The fact that I've lost two frogs already, I feel like it isn't necessarily something im doing or not doing, but that the frogs are sick. If im missing any key information please let me know. Thanks guys for reading.