Assistance Needed with Multy U WSR30 AC2100 Devices

Kepa

Dear Zyxel Support,

I have a Multy U system consisting of 3 devices:
3 × Multy U WSR30 AC2100

However, I am unable to configure them using the latest version of the app from Google Play Store, as it keeps failing/interrupting.

I also cannot access the device via its IP address (192.168.212.5).

Using Telnet, I can retrieve the following device information:

For further information check:
http://www.zyxel.com/

root@WSR30 # atsh
LD Version : V1.00(ABMY.11)C0
Project Name : WSR30
Product Model : WSR30
Serial Number : S193F24001816
First MAC Address : b8eca3f596e0
LAN MAC Address : b8eca3f596e0
WAN MAC Address : b8eca3f596e1
5G_0 MAC Address : b8eca3f596e2
5G_1 MAC Address : b8eca3f596e3
2.4G MAC Address : b8eca3f596e4
Bluetooth MAC Address : b8eca3f596e5
Default Country Code : E1
WLAN0 Reg Domain : 13
WLAN1 Reg Domain : 3
WLAN2 Reg Domain : 3
Box ID : S193F24001816
Part NO : WSR30-EU0301F
root@WSR30 #

Is there any solution to resolve these issues?

Thank you in advance for your help.