Zigbee gateway integration

[Zen]

I'm using innr plugs and they do extent the network only with a limited range. It takes a bit of time for the new network to get established. Zigbee mesh is self learning and it needs a bit of time to adjust. Look on the network map to see how all is connected.

I've tested it on two of our customers, LM5 with USB gateway, 2x INNR s.p. and they have used the system for like 4 months. I've tested it several times, in different days, reloading the network map during the week to see if something change. The two devices were never online trough the smart plug, always trough gateway with signal going between 0% and 5% , and the plug was like between 30 and 40%. The probe was near the plug. I've tested it with Sonoff SNZB, Moes T°/H%/lux and Tuya T°/H%. I've also tried to change the plugs with others but nothing changed. 
Don't know if within the newest updates something has changed.
I'll try recreating the same system with RS232 gateway and track a network map to share the results.
BR

Updates:
After 5 days of testing, my INNR plugs wont extend anything. As you can check by the map, no devices are connected to the sp but Wiser VA6 and Tuya 2 are near Smart Plug 2 and Wiser VA 5 and Tuya are near Smart Plug 1. I've tryed several times to pair again the devices with the gateway but i never see this devices linked toghether.

The device on the picture seems not to be connected but i'm able to send/receive data from everyone of them and i can send commands too and they do their things. Looks a bit strange. As you can see on the device list no one seems to be disconnected, at least on the signal intensity and the last message.