Sophos Firewall 21 daily letsencrypt request error

SFOS should only try it once per day (not multiple times). We have some improvements to change the timer of this action to be on a different time of the day to spread the renewal process. 
But basically i would rather recommend to check the reason for the first fail in the logs. 

If you used the EAP to generate the LE - Please delete the certificate and create a new one. 

Well, as far as I can tell it has been renewing the certificate daily which doesn't seem neccessary since they are valid for a couple of months. 

Concerning the logs: PLEASE for the love of god point me in the right direction. I just migrated over from the UTM 9 and am still working things out with this FW and haven't been able to find any LE log files.

Well, as far as I can tell it has been renewing the certificate daily which doesn't seem neccessary since they are valid for a couple of months. 

Concerning the logs: PLEASE for the love of god point me in the right direction. I just migrated over from the UTM 9 and am still working things out with this FW and haven't been able to find any LE log files.

You have two ways to access the logs: 
Diagnostics in SFOS itself give you access to all logs to download (let encrypt.log)

or you do it via CLI. 

See: https://docs.sophos.com/nsg/sophos-firewall/21.0/help/en-us/webhelp/onlinehelp/AdministratorHelp/Logs/TroubleshootingLogs/LogFileDetails/index.html 

You can also PM me the support access ID of this firewall, you can activate it via Diagnostic - Support Access.