So after lots of router setting changes for ip6 and other esoteric settings. My fix was a simple one.
Change Alexa devices to be on same 2G network. Not it works with relative ease.
I did enable ip6 on my router but I think Alexa network mismatch was more of the problem
Hope this helps others.
@Guavatone Thanks for sharing your practical solution! It’s awesome that you narrowed down the issue to the Alexa devices being on the same 2G network—this kind of real-world experience is so helpful for others troubleshooting Matter accessory connections. Even with IPv6 enabled, network consistency between devices can make a big difference, and your tip might save someone a lot of time. Keep sharing these insights—they’re really valuable for the community