I have opened the first 2 portals, but with Caveland I right-click with the sapling and nothing happens. For Ice Cavern it just places the packed ice block inside the frame. I tried adding triggerItems to the config files and use just a minecraft:iron_ingot but that does not work either. Could it be a mod conflict?

Mods:
Pastebin

Caveland and Cavenia moved to mirage worlds.
Ice Cavern and Ruins Cavern were removed.

Please check here.
https://minecraft.curseforge.com/projects/cavern2/pages/home