Complex sentence: During molting, it is vital that you do not disturb them and also make sure that the humidity is at a safe level too much humidity can hinder the insect from drying out correctly and it might end up with bent legs and crippled arms.
Split into simpler sentences: During molting, it is vital that you do not disturb them. Also, make sure that the humidity is at a safe level because too much humidity can hinder the insect from drying out correctly and it might end up with bent legs and crippled arms.