Cronus Device Banned at EVO?

Since the tournaments will be on XBOX360/ONE, and i’m a ps3 user, can i use a cronus device to use my ps3 fightstick on the xbox, or is banned?

They are currently banned. If the Cronus company sends me some samples and I can do some testing, they might be unbanned. But for now they are banned.

Cronus doesn´t even exist now (the project is dead). What can you suggest me for use my ps3 fightstick at evo? Another not banned converter?

that seems quite logical

Re-wire your stick with a PS360+ pcb.