MTX from poe 1

why I can see all my mtx from poe 1 but cant use them?
are they will be useble in the future?

Probably the same reason why the store isn't really working yet. They had to shut down the servers 2 or 3 times yesterday because of the massive influx of players, and adding shards to the server was causing them some database issues (they posted about this on X).

So, my advice would be just to be patient and wait for them to implement it. Remember, it's basically still within the first 24 hours of release of an *early access* game that probably won't "officially" release until maybe around summer of 2025.

I can use 1 of my portal effects.
I can use 1 of my helm effects.
I can use 1 of my weapon effects.
I can use 1 of my weapon skins.

I figure it is coming along when they have more server issues sorted.