Minecraft eduction not sigining in after IPv6 upgrade/rollout

This week, I rolled out IPv6 based on ISP prefix around my home network. (omada software controller, ER605, EAP670)

part of that I also updated ACLs.

My kids computers are on their on SSD / vlan... And there no active ACL's on thier VLAN.

After roll out I tested their connection and they seemed to have normal internet, and all I tested seemed to work.

I just now had two grumpy kids as they can't sign into their minecraft education anymore....It loads, asks for signing goes to Microsoft sign in accepts credentials and then Mincraft says tring to sign in.

Getting them off the network and thtough phone hotspot I can get them to sign in (and switching them back to normal wifi after the game keeps playing normal for now)

Now I believe the omada with ER605 blocks incoming IPv6 in some manner, as this error occured after IPv6 roll out I suspect is is very related.... as nothing else changed, and turninig off all my ACL rules (both IPv4 rules and IP6 rules makes no change)

Is there a way of seeing what is getting obstructed and where I checked my logs and all i can find are DHCP requests I can't find any other events.