Hi @gabysantosw! Welcome to netlify community.
The SSL certificate is working now. The additional delay seems to have been enough to allow things to work right when our system attempted to re-issue the certificate.
Generally, the reason we are unable to provision a complete SSL certificate for your custom domain is that the DNS cache time to live (TTL) value for a record has not had time to expire (from your old settings) before you tried to use it with Netlify. Our SSL provider (https://letsencrypt.org) is unable to create certificates for names that have old cached values still in effect.
Please let me know if things are not working as expected now.