I've had problems with IPv6 error as described and also Network Lock function since upgrading to 2.19.7 on Windows 10 Home. Tried thoroughly uninstalling and downgrading to an older version of Eddie but it didn't improve. Then tried uninstalling Eddie and installing OpenVPN 2.5 instead. Still had errors. Therefore Eddie was not the problem. Something in the log led me to try "Reset Network TCP/IP Stack" which I found at Open VPN's Community Wiki. It fixed my problem. Seems there are other ways to reset Window's network stack if you search for it. Below is taken from the Open VPN Wiki. Good luck!
Windows Vista, 7, 8, 10
Search for Command Prompt > Run As Administrator > Enter the following commands one at a time > Restart computer.
netsh winsock reset catalog
netsh int ipv4 reset reset.log
netsh int ipv6 reset reset.log