Advancement Plaques mod is already available on aternos yet iceberg mod that is needed on it is not yet added. I tried suggesting it, but it says that the iceberg mod is not popular enough. Please add iceberg mod since it is needed to play with advancement plaques mod. I wanted to put it on my world since it gives a better touch and feeling on every advancement. Please add iceberg mod asap!! Thank you.
https://www.curseforge.com/minecraft/mc-mods/iceberg
https://www.curseforge.com/minecraft/mc-mods/advancement-plaques
