Self-Signed Certificate Error on Orbi RBR50v2

Thanks FURRYe38 and CrimpOn for the responses. It is true that the self-signed certificate isn't preventing connectivity to the RBR/RBS and management console/website (eventhough I need to use router IP vice orbilogin.com).

After reading CrimpOn's reply, I checked Access Control for blocked devices. There were no blocked devices. Next, I tried toggling Access Control. After turning Access Control off, I was able browse the web on a laptop that was previously blocked by access control (after accepting the risk of using the self-signed certificate). I was also able to connect a smart speaker which had recently been disconnected. After I turned on Access Control, I saw that I was still able to browse the web on the laptop. However, the smart speaker appeared to lose the connection to the internet. Eventually, I started receiving the self-certificate/blocked by access control screens when attempting to browse the web on the laptop (my guess is that the connection timed-out after Access Control was enabled). I also checked the log on the management console/website (Advanced > Administration > Log), but I didn't see any messages indicating blocks or DoS for the laptop and smart speaker.

It seems that the issue is being caused by Access Control. It's strange that there is no inidication of the issue in the management console/website. My glaring questions are (1) why is access control blocking devices that have clearly been configured for access and (2) why does access control allow connectivity via ethernet to the router on the same laptop which was blocked by access control on a wireless connection? I haven't checked any packets yet, but I guess that's my next step if I want to find out what's really happening here.

I'd prefer to keep Access Control enabled, but I would like to keep some of the fixes in the current firmware. At this point, it sounds like I either need to disable Access Control or rollback the firmware.