Hi, at first sight, seems that there are two errors:
The first:
/usr/local/sbin/ovpn-linkdown ovpnc1 1500 1542 172.27.232.9 [More Information] 255.255.252.0 [More Information] init
Closing TUN/TAP interface
Exiting due to fatal error
Appears to be a problem related to the hardware (patch cord, network card, etc.) Due to something, the link is going down. If you can verify the above components and see if the errors are gone.
The second error:
ERROR: could not read Auth username from stdin
TLS: soft reset sec=0 bytes=257104590/0 pkts=272786/0
Question: This error occurs few seconds after the first one? If yes, maybe it's related to the first. If the first error gets corrected and this error continues, try to increase the verbosity of the log file (one way too is to add to the file /var/etc/server1.ovpn the lines: "verb 5" and "log-append /var/etc/log.txt", restart openvpn and see the log file contents. This modification will be lost after reboot) to have more information which command exactly is complaining about the missing Auth username and so we can solve the problem.