Waiting on certificate issuance from order status "pending"
The typical problem with letsencrypt certs is the letsencrypt itself not being able to validate who you are and that you own the domain. In this case, alexguedes.com
.
With cert-manager you can do Domain Validation and HTTP Validation. Based on the posted ClusterIssuer
you are doing HTTP Validation. So you need to make sure that secure.alexguedes.com
resolves to a globally available IP address and that Traefik port 443
is listening on that IP address.