I've updated the token in the OP. This is the token:
https://tricorder.pi-hole.net/q24fcmeus3
I see that the IPv4 is green and the IPv6 is red and that, as per the log, this should be okay.
No major software changes have happened on the phone, it just became slow recently. I've cleared caches on the phone and updated Chrome & Firefox (it's slow on both)