RBK53S firmware uplift to V2.7.5.6 & 'Known DoS attacks and Port Scans' logging failure?

Hi guys I'm looking for some advice on my RBK53S mesh system. I logged into the router a couple of days ago and was advised there was a firmware update which would take me to version V2.7.5.6 (from version V2.7.4.24).

I was surprised concerning this as I know the system has gone end of life. The uplift completed with no initial issues.

One issue the router had prior to the uplift was that the 'Known DoS attacks and Port Scans' data was never saved to the log until the router was rebooted twice after a restart.

However, since the firmware uplift that data is NEVER saved to the log. So far I've rebooted the Orbi 17 times and no data is logged.

Is this a known issue with this firmware version? Is there any way of fixing it? Any help or suggestions would be appreciated.