@NERMEIDIS Thanks for reaching out to Microsoft Q&A, apologize for any inconvenience caused on this.
Based on the shared information, we have understood that you are using this Azure static WebApp service and want to know whether the certificate attached to it can be auto-renewed or not.
Static Web Apps automatically provides a free TLS certificate when you add a custom domain. Similar to free App Service managed certificate this TLS/SSL server certificate is fully managed and is automatically renewed continuously in six-month increments, 45 days before expiration, as long as the prerequisites that you set up stay the same. All the associated bindings are updated with the renewed certificate.
Feel free to reach back to me if you have any further questions on this.