First of all, try renewing your certs manually:
sudo certbot renew --post-hook "service nginx restart"
You should see a message with "successful".
Now, this is very weird because Webinoly have a redundant process to prevent these issues. Certboot (Let's Encrypt) have an automatic renew process that runs several times a day in your server. Also, as double check, Webinoly runs the renew command once a week and sends an email to the account you have registered the first time you created a cert.
Definitely, something is not working fine in your server, it's almost impossible that both redundant renewing process are failing.
Check the Webinoly renew cron job: sudo crontab -e
Regards.