What am i doing wrong?

[Hypnotic]

Boost his temps, 78 is too low, he should be around 83-84 atleast, 78 is ok for night time. Don't feed him anymore mealworms, the shell of those is pretty hard and could lead to impaction.
Attach your heating pad to one of the sides (preffered, a side not near the waterdish), don't use it underneath. You need to tape off 3 sides of the terrarium with a background, only leave open the viewing side, this will provide Bowser with a secure feeling.
Your absolutely right, these frogs should be spot cleaned and fully cleaned every 3 weeks to 1 month.
The best diet for these frogs is nightcrawlers, try to avoid hardshelled prey like mealworms and other worms of this kind. Would you happen to know his svl (snout to vent length)?
The prey I personally use are, dubias, nightcrawlers and locusts.

[bowser]

alright i can rise the temperature and i wont feed him those anymore i knew they weren't god but i got desperate ill get some backround tomorrow when i go to the pet store and i thought he cleaned it not enough at all i felt really bad for him and i tried feeding him night crawlers today but he didnt react and hes about 3 and a half inches he is really small for some reason
im worried because his back legs re always twisted and one arm is always under him and the man didnt mention dusting any of his food with calcium im scared he is getting MBD but his mouth is fine