Does this mod work with the iron chest mod. I am tring it and cant get it to work. if it doesnt it, is there any future plans for it to work with it?

It does work
I used it before like 1 or 2 years ago.
However, I use this mod
https://modrinth.com/mod/reinforced-chests

Yes it does. Chests from both Iron chest and Reinforced chest (mentioned by the first reply) mods have inventories that are recognized by the inventory connector.