mk9395 The problem is. Geyser clients will hardly be even able to support any Java resource packs, not to mention from ItemsAdder. I have tried to convert the itemsadder resource pack to geyser, but only managed to make it work 3/4, not to mention players had to download it themselves to install it and use it.
ItemsAdder resource pack can, and will probably stay Java only. Bedrock is coded totally different, uses different resource pack file extension etc.… It is a lot of work and probably recoding to make itemsadder support both. Probably a better bet it to wait for geyser to make sort of an implementation into ItemsAdder to convert packs.
If you do not have custom resource packs on the server do not use Bungeepackfix, because you do not need it.