@Xammo You should reset the device and then connect directly to that in standalone mode (webpage i.e. 192.168.0.1) Maybe you can try the workaround of Tescophil (first page of the topic, 3rd reply)...

@Xammo take a look here for v2 ER605 Download for ER605 | TP-Link

Same issue, adopting- provisioning- configuring loop. The network functioning properly (DHCP by ER605). Omada Controller (NAS app) keeps sending me notifications on my mobile device about connected...