What can you see in the Open Remote dialog? Can you see the name of the Host Computer?
The following known issue may be the cause and the following links include a fix for it if this is the issue:
For More Information see:
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip
The link indicating the workaround by placing the server.pem in the correct folder worked! Thank you.