Failover doesn't work for IP phone. Something with DNS?

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I have testing environment with pfSense configured to perform NAT on both WAN1 and WAN2 interfaces, each of which obtains its IP address using DHCP.

When testing like unplugging WAN1 it switches to WAN2 (usb to ethernet adapter) no problem but IP phone is not routing to WAN2 while other network devices are.

When I reboot the phone or pfSense it still won't route via WAN2.
IP Phone is Yealink SIP-T46U - 192.168.2.105. I am able to ping google IP but not host name from the phone.

Wireshark logs
2 1.215317 192.168.2.105 192.168.2.1 DNS 79 Standard query 0x54f8 A time.vocalocity.com
3 1.218848 192.168.2.1 192.168.2.105 DNS 79 Standard query response 0x54f8 Server failure A time.vocalocity.com
4 1.219297 192.168.2.105 192.168.2.1 DNS 79 Standard query 0x1882 A time.vocalocity.com
5 1.222605 192.168.2.1 192.168.2.105 DNS 79 Standard query response 0x1882 Server failure A time.vocalocity.com
6 1.223117 192.168.2.105 192.168.2.1 DNS 89 Standard query 0xfafc A time.vocalocity.com.home.arpa

IP Phone is Yealink SIP-T46U. Vonage service. Screenshot is the SIP settings on phone.
Vonage service. Screenshot is the SIP settings on phone.

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Any thoughts? I know it's not the phone configuration or providers ISP because I had the same issue at my last job with other phones. However, the same set up worked just fine on Sonicwalls.