The nodes are working -  if you are using the windows wallet, just close it and open:

%Appdata%\polisCore

in "windows explorer" and open "polis.conf" by using the "editor".

Simply add the following text into it:

addnode=159.89.38.128
addnode=159.89.38.126
addnode=159.203.110.137
addnode=174.138.60.69
addnode=159.203.99.171

Save the file and start the polis wallet.

After that it should work.