@JVB06,

The AX73 is actually listed as one of our compatible OneMesh devices, as can be seen on the product page here.

The OneMesh Functionality essentially allows TP-Link networking devices to be linked together to create a mesh network. Most any network can take advantage of a Range Extender, as all it will do is connect to and rebroadcast the wireless signals from the main router. You should have no problem using a OneMesh-Compatible range extender with your network as a mesh node or in its default RE mode.