Questions in DONTFORGET

Hey! So I've checked the trophy room and seen an achievement for a FFA (Free For All) mode. What's all that about, how does it work? I've enabled it (I think) but nothing happens. On android.

will undertale dont forget bottons is updated in story mode

will you add new au like dust sans or disbelif Papayres?

Will you add new "other" characters ?

i have a question,when will jevil be added and when i add custom music it crashes,and how do ppl get admin?

How can i get pogs ?

is the diamond enemy real? what is its % spawn

Is there a DF discord? If there is how can i join? Or is it only for specific people?

how can i apply to be a mod in the game?

For some reason, my friend on Discord has discord Integration with Don't Forget, but I can't find any way to enable it myself. How exactly do you get it?