I manage two sites with my OC200 v1.0 controller. The gateway of the secondary site reports over internet into the controller which is located in my primary site.

Setup of primary site:

1 x OC200 v1.0 controller (firmware 1.36.7 Build 20250707 Rel.72474)

1 x ER605 v2.0 gateway (firmware 2.3.0 Build 20250428 Rel.18967)

2 x SG2210P v5.20 switch (firmware 5.20.14 Build 20250928 Rel.82909)

1 x ES205G v1.0 switch (firmware 1.0.4 Build 20250609 Rel.74647)

5 x EAP615-Wall(EU) v1.0 access points (firmware 1.5.4 Build 20250515 Rel. 67108)

2 x EAP225-Outdoor(EU) v1.0 access points (firmware 5.2.3 Build 20250709 Rel. 67584)

2 x EAP230-Wall(EU) v1.0 access points (firmware 3.2.5 Build 20250904 Rel. 65179)

Setup of secondary site:

1 x ER706W v1.0 wi-fi gateway (firmware 1.2.2 Build 20250821 Rel.60581(4555))

1 x EAP225-Outdoor(EU) v1.0 access point (firmware 5.2.3 Build 20250709 Rel. 67584)

Yesterday evening I upgraded my ER605 v2.0 gateway of my main site to firmware 2.3.1 Build 20251015 Rel.78291 to fix the command injection and root access vulnerabilities on Omada gateways. After the upgrade the ER706W v1.0 wi-fi gateway of my secondary site is not reporting into my OC200 v1.0 over internet anymore. It shows as 'DISCONNECTED'. Since I don't have physical access to my secondairy site, I cannot reboot the gateway.

Edit: Someone who has physical access to my secondairy site rebooted the gateway, but this did not resolve the issue.

Does someone recognize this behavior and knows how to resolve this?