Gateways on wifi regularly offline

Hi all,
I have an office with 4 gateways. Two was enough, but ever since our wifi access points were updated, the gateways regularly are offline for an hour or more. It appears as if the DHCP lease expires and the gateway fails to renegotiate a new connection. I believe the normally green LED is blinking red during the event.
I have somewhat hacked a solution by simply adding some more gateways for the time being.
Anyone know a better solution. My IT department is not very forthcoming if it comes to whitelisting the devices or other solutions like a static IP or permanent lease.

Can the WiFi drop off be triggered by renewing DHCP lease with a new IP?

@Alexey ^ pinging you here

Hi @gouwzee, I tested how DHCP lease expiration is handled and found no issues. The gateway just gets a new IP and establishes connections with this new IP.
It would be very helpful if you could connect one of the gateways to a computer via USB and use a serial port monitor to record the gateway’s log.