Regarding the “no acceptable traffic selectors found” error, you could try the workaround in:
The IPsec connection failed and xl2tpd shouldn’t have even been run, but for whatever reason strongswan returned a false positive to NetoworkManager-l2tp that the connection was successful and xl2tpd was run.
in the first log you are trying to connect to a VPN server with IP address of 93.146.250.201, in the second you appear to be trying to connect to a VPN server which is down and/or unresponsive with an IP address of 63.146.250.201