What confuses me a little is this - Error: "During secondary validation: No valid IP addresses found for www.sojer-last.com.futurecms.at"
However, in the same request:
addressesResolved "83.65.246.198" addressUsed "83.65.246.198"
So LE Server was able to resolve the IP address correctly?
(Second Validation Info: ACME v1/v2: Validating challenges from multiple network vantage points)
Could it be possible some of the LE Systems which are used for the second Validation got Problems reaching European Networks? Routing Probs? Something in this Direction? 