Flint: unable to get ipv6 address

Ipv6 used to work on my network with my flint router, but I've had it disabled for a few months now. When I turned it back on, it never assigned an ipv6 address. I tried contacting my ISP and they confirmed that everything looks good on their end and did some troubleshooting, which didn't help. Is there anything I can try with the router apart from a reboot? I use adguard home and I have vnstat2 installed, but I don't use wireguard or anything else. It's running the latest stable firmware.

Ipv6 is set to native with automatic dns acquisition.

Never mind - it seems to be working. For some reason, the router does not report an ipv6 address on the home page, but devices seem to be able to connect over ipv6 anyway.