For Connection type and Relay speed tests in the diagnostic tool, you might get a new suggested setting if the currently used setting will not work to establish a remote session or has worse performance.
In this case, please click "Apply suggested settings" to apply the suggested setting, then re-establish a remote session.
Note:
To change the suggested relay server back to the original one, please execute regedit.exe on the remote computer with the streamer installed, go to the path:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Splashtop Inc.\Splashtop Remote Server
Then delete the key CloudRelayRegion and CloudRelayProvider.