Didnt work for RDP session

I have been trying to find a good RDP app for doing minor remote control of my servers. The name Solarwinds I was familiar with and thought it might be best. Downloaded and installed and tested a connection to one of my servers. Connection always fails. With other apps working on first try, puts this one as the worst I have downloaded so far. I will not continue testing further.

Heritage02Rider about SolarWinds Mobile Admin Client