Wallet 1.3.1_qtfix2 & 3.0.0 not working for me:
Yeah, hardcoded seednodes are outdated. This is being worked on. For now you can just add the following to your yenten.conf:
addnode=193.70.33.8
addnode=185.185.69.156
addnode=153.121.74.170
addnode=116.91.89.16
addnode=213.168.40.114
addnode=91.69.247.135
addnode=119.245.50.48
addnode=114.163.222.47
Having said that
2018-11-26 22:01:10 ERROR: GetMyExternalIP() : connection to 216.146.38.70:80 failed
looks like there is a problem with your internet connection. That connection really should not fail. Can you reach
http://216.146.38.70:80/ using your browser?