Cannot connect to any SQL instances

I just downloaded this application and I am unable to connect to a single instance of SQL, no matter how I configure the connection, (host name, ip address, etc.). There are no connection error details provided. Even with the connection error, it still adds the server to your server list, but then will not allow you to delete it or modify the connection details. I will be requesting a refund.

kgbo1228 about SQL Studio