@Matej_Sramko and @Damiano_Fusari welcome to the Zwift forums.
The Axiom Wireless is not listed on our list of supported Elite trainers. It’s likely your Elite model was made prior to the standardized flavors of Bluetooth and ANT+ that are in use now. So while it may broadcast a BLE or ANT signal, it’s probable that it was designed to work with Elite’s own app, not with third party apps like Zwift.
I tried to search for the Axiom Wireless on Elite’s own support forum, but all mention of it has been removed. I would like to be more hopeful, but I don’t think it’s going to work.
An inexpensive workaround is to buy a crank-mounted speed sensor that brodcasts in Bluetooth LE or ANT+ such as this one made by Wahoo.. This basic setup will allow you to pair to Zwift.