Arm movement causes glitch/deformation

Hi everyone. My boss wants to start a youtube channel so i started to draw caracters and animate them with adobe character animator.
Everynight, i go to bed with proud that my puppet works okay but then every morning it all falls apart when i open it again, i see new problems (and they were all totally working fine when i last check)
Now my arm problem looks like this; the lines are weird and blurry, and it all looks really deformed.. ıt was ok for weeks and i didnt make and changed but now its like that.
but is there any hero that won't just check the arm but look into the whole puppet to see some possible future issues in there? Pls help me out i feel like i'm never gonna get out from this loop and my boss is starting to get bored of waiting for them to solve... here is the puppet; https://drive.google.com/file/d/18gcx-zNmxnBIVkFngkIZ37hQ_KZBcVNK/view?usp=sharing
thank you in advance
