Give them a few days to settle in....they tend to like room....we have outs in 10 gallon tank with some pothos planted in coco fiber for some cover and a soaking dish. She seems very happy now.
As far as the treatments go, I agree with Grif......do each treatment separately so they don't get chemical OD. As for the de-wormer.....make sure it is one specifically for frogs, preferably recommended by an Amphibian savvy vet.

Going to warn you now....in the wild, they are frog & lizard eaters. We tried everything and had to resort to feeding one of our froglets whose genetics were flawed physically and a Night Crawler....she took both. This is after attempts at force feeding....
EPIC FAIL!!

She spit out everything we forced on her without fail. So after much discussion we decided to feed her the cranwelli froglet. Yes, it was hard to do even though the froglet was basically lame and not able to be offered for sale. We will soon be collecting some Gulf Coast tadpoles from our ponds to raise up for feeders. They will be treated for chytrid and de-wormed as well before being fed off.

Good Luck with your frogs.....post pics!!