I have downloaded the mod as zip, unzipped it and compiled it ( ./gradlew build ), but when i create a world and make a portal it does not create the atum dimension (i just sit inside the portal and it does nothing), and i can't go there through commands either ( i tried with /execute in atum:atum run tp [myName] ~ ~ ~ ).
Anyone knows how to solve this?

There is a reason it's not released for newer versions of Minecraft.