Sectigo is currently experiencing degraded performance with its issuing platforms. Users will experience delays with free SSL certificates being issued or renewed as a result.
You can view Sectigo's status page here:
https://sectigo.status.io
We will provide further updates as they're made available.
UPDATE 4:00PM EST: As of 9:57AM ETC Sectigo's Issuance platform operations have returned to expected levels https://sectigo.status.io/pages/history/5938a0dbef3e6af26b001921