OpenDNS not working

Router model: TP-link TD-W901N

nslookup -type=txt which.opendns.com

Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
which.opendns.com text =

"I am not an OpenDNS resolver."

opendns.com nameserver = auth3.opendns.com
opendns.com nameserver = auth1.opendns.com
opendns.com nameserver = auth2.opendns.com
auth1.opendns.com internet address = 208.69.39.2
auth2.opendns.com internet address = 146.112.60.53
auth3.opendns.com internet address = 208.69.39.2

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nslookup -type=txt debug.opendns.com. 208.67.220.220

Server: resolver2.opendns.com
Address: 208.67.220.220

opendns.com
primary name server = auth1.opendns.com
responsible mail addr = noc.opendns.com
serial = 1592827368
refresh = 16384 (4 hours 33 mins 4 secs)
retry = 2048 (34 mins 8 secs)
expire = 1048576 (12 days 3 hours 16 mins 16 secs)
default TTL = 2560 (42 mins 40 secs)

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nslookup whoami.akamai.net

Server: resolver1.opendns.com
Address: 208.67.222.222

Non-authoritative answer:
Name: whoami.akamai.net
Address: 213.244.72.25