It looks like everything is properly set doing lookups on the domain from your image. Please make sure that opendkim is running on the server.
C:\Users\ryan>dig txt default._domainkey.casavalenthina.com.br
; <<>> DiG 9.16.4 <<>> txt default._domainkey.casavalenthina.com.br
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54760
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;default._domainkey.casavalenthina.com.br. IN TXT
;; ANSWER SECTION:
default._domainkey.casavalenthina.com.br. 14400 IN TXT "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDDr++i54uznJiRaItlyZJt4OD+bykNCl+nJ4U0ojUMqXReyDvmr3UdeZ8lrdq40A43LAdzjOLd+r+esZmGdYuL0lusHczEkAo/WKS4PquK3gyZqqz3o/KeL0yzjCX+FemCY+oFLdMyVGJ5kOhvvD1iyqKYtK+u/iQawv9QWrhYCQIDAQAB"
;; Query time: 307 msec
;; SERVER: 192.168.8.1#53(192.168.8.1)
;; WHEN: Thu Mar 10 09:41:37 Eastern Standard Time 2022
;; MSG SIZE rcvd: 316
C:\Users\ryan>dig txt casavalenthina.com.br
; <<>> DiG 9.16.4 <<>> txt casavalenthina.com.br
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49352
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;casavalenthina.com.br. IN TXT
;; ANSWER SECTION:
casavalenthina.com.br. 14400 IN TXT "v=spf1 +a +mx +ip4:45.77.116.228 ~all"
;; Query time: 557 msec
;; SERVER: 192.168.8.1#53(192.168.8.1)
;; WHEN: Thu Mar 10 09:41:58 Eastern Standard Time 2022
;; MSG SIZE rcvd: 100