Unifi Switch 8 Ports 150W - Failing to adopt and getting different network from LAN

We have two Networks:

LAN: 192.168.x.x
supernetwortk: VLAN 100 - 172.16.x.x.

Description of problem:
Switching is failing to be adopted and getting ip from subnet
172.168.x.x instead of 192.168.x.x from LAN.
Solution: reset switch