I can see "EasyMesh" on the configuration page but no "OneMesh".

I have an other device AX1800 with the following parameters: Firmware Version: 1.3.8 Build 20230830 rel.19767(4555) ; Hardware Version: Archer AX20 v1.0

I want to use AX1800 as the main router and the AX1500 as the satellite one. (I just bought this AX1500 for this reason since I could see on the https://www.tp-link.com/hu/onemesh/product-list/?utm_source=web&utm_medium=ui&utm_campaign=wifi-router site that it is compatible).

I could set up the AX1500 to "satellite mode" and I could see the AX1500 among the "OneMesh" devices list but I could not add it to the mesh. As I clicked on the "Add" button I got the "Operation failed" message.

What can I do to make the AX1500 to work as a OneMesh satellite device?

Thanks!