Questions in DONTFORGET

Share your creations!
hey RickyG, in the dark palace area, one of the master quest doors that you cant go in yet says there is a laughing sound in there, will it unlock jevil as a skin when you complete making it and also, will we have to fight him first?
how do you open the bestiary on dont forget i dont know how
can someone explain to me, why I can't put my account on undertale don't forget
how do i get onto multiplayer? sorry if this is a basic question i've never played this
Anyone know the discord page? Or if it even has one?
does data still reset each update? please tell me
Is there any way to increase diamond enemy encounter chances other than pogs?