@iharyadi Your routers are working quite well.
For those out there considering to buy some of these. I just migrated from ST to hubitat. In the process I setup two of Iman's routers along with 3 Ikea outlets. I got the 5 "routers" in place before I started to pair all of my 30 Xiaomi sensors.
I have been running solid since Saturday and I finally had a chance to setup my xbee to scan the mesh. As it turns out, one of Iman's routers has 19 Xiaomi's, the other has 7.
As for the Ikea outlets. Outlet A, has 2 Xiaomis, Outlet B has 0, Outlet C has 0.
The remaining Xiaomi sensors paired to the hub directly.
The Ikea outlets are evenly distributed through my two story. One of Iman's is up in a far corner of my 2nd story, the other is in the opposite corner in my garage. So if anything the Ikea outlets should have had a better chance of picking up children.
Considering Iman's new routers can have a battery, I would say your MUCH better off purchasing them over the Ikea outlets. Unless you truely plan to control something with the Ikea Outlet.