In the file ulm.conf put this :
addnode=104.129.16.188:22222
addnode=140.186.20.196:22222
addnode=155.94.169.243:22222
addnode=188.243.232.224:22222
addnode=2.153.70.222:22222
addnode=51.15.76.210:22222
addnode=78.113.252.129:22222
addnode=98.115.147.74:22222
It works with a 4G connection in france at home
Edit;
its now working but no coin for three days!