Check your domain certificate against 2020.02.29 CAA bug.
This tool will allow you to determiante if you need to replace your SSL / TLS certifiate / check if your domain or certificate serial number has been affected by CAA bug and needs to be replaced to avoid interuptions.
At the time of writting 23.659.138 domains are parsed from the database.
You can read more Official LetsEncrypt BlogSERVICE STATUS PAGE.
It Doesn't Matter How Many Resources You Have - If you don't know how to use them, they will never be