Here’s a list of the active VPN servers
Singapore – gw2.sin2.slickvpn.com
Boston – gw1.bos1.slickvpn.com
Columbus – gw1.cmh1.slickvpn.com
Los Angeles – gw1.lax2.slickvpn.com
New York – gw1.lga2.slickvpn.com
Manchester – gw1.man2.slickvpn.com
Amsterdam – gw2.ams3.slickvpn.com
Houston – gw2.hou1.slickvpn.com
Kansas City – gw1.mci2.slickvpn.com
Salt Lake City – gw2.slc1.slickvpn.com
St Louis – gw1.stl1.slickvpn.com