Some new problems

[Musicpanda]

I still haven't noticed Hugo leaving any litter in his substrate for weeks now I'm really worried, weird thing is that he eats as normal, and moves around like normal. But here's the thing, it's 6 o clock in the morning in Sweden and he began to make some real weird noises, sounds like a squeeze toy sound... I'm not sure if he's just rubbing against the bottom of the plexi-glass but that doesn't seem to be it cause I hear it frequently once every minute and he's still at the same spot not moving what I can tell. The other problem I have except the ones already mentioned is that I yesterday found some mould at his plants (I've been having problems keeping the moisture level below 80%). and today I saw some mould (I think) on some of his substrate, so now I'm thinking about changing all of it even if it's not dirty, but what about my frog? Could he be sick from it? He doesn't look constipated btw so it's really weird the whole situation...

Please help me everyone...

*UPDATE*
He/she stopped making the sound after 10 minutes... began doing it when his day lamp turned on 6 o clock...

[John]

Looks like a lump of coconut husk. Hopefully it's the only piece.

[Musicpanda]

It's a lump of coconut, but how would you act in my place? Should I change the substrate? I checked 7-8 other lumps.. and they had none. And about the litter problem can't the frog end up real sick if I don't find his litter and toss it out, and the other way if he isn't doing number 2 he will get impacted... :S

[Julia]

If the mold was found in only one spot then I would recommend leaving the substrate for now. Keep an eye on it and if you find more over the next few days then replace it.

The sounds you were hearing from your frog, did it sound anything like this?
YouTube - Ornate Pacman Frog croaking!

[Musicpanda]

Okay thanks Julia I'll keep and eye out! About the croaking, I'm not sure now, I know since before how a Pacman should sound but maybe it's a attempt to croak? Always been unsure if my Pacman is a he or she, I heard the sound some minutes after the lamp turned on as mentioned above, maybe he think he's a rooster. :S

Question remaining about the toilet needs... who will replace the question marks for me?

[Julia]

Lol sorry I can not answer your question about the lack of feces. Although I keep several different types of lizards and frogs, I have never had a Pacman. With my Bearded Dragon sometimes he waits up to 2 weeks to go to the bathroom. I know for lizards you place them in warm water and it helps them go. My frogs on the other hand seem to go nonstop so I've never had to deal with them in that way. Hopefully someone with experience with Pacman frogs can answer that question for you. Good luck!