It can happen but very rare because DotVPN service runs stable and smooth. Connection is established with any VPN-server in 99.9% of attempts. If such an error still happens, do not worry! Our system will detect the problem and eliminate it, though it may take some time. Wait for a while, and then try to connect to DotVPN again. If the connection still fails, please contact our support: support@dotvpn.com. Our experts attentively read all comments from our users, so we will resolve any issue as soon as possible.