I was trying to log my score for one of the Bandit games on OverTheWire.org using the WarToken method and OTW's custom 'wechall' script, and discovered the script was throwing an SSL exception. It looks like the SSL certificate for wc2.wechall.net that is installed on port 4142 for that domain name expired on the 5th:
Version: 3 (0x2)
Signature Algorithm: sha256WithRSAEncryption
Issuer: C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
Not Before: Jun 7 21:43:07 2020 GMT
Not After : Sep 5 21:43:07 2020 GMT
Subject: CN = wc2.wechall.net
Are you able to fix that so that we are able to log challenges from OTW?