Upon further search, found the Add Ons on the Real Flight page: Add-Ons Volumes 1-5 for RealFlight G4.x, G5.x, 6.x, 7.x, 8.x, and 9.x? - RealFlight Support . Indicates it is not compatible with RF9.5 but is working fine so far.
Did you visit the RealFlight.com site for this download(s) recently? I was having the same issue with lack of visible objects from pre RF9.5 imported airports and could not find anything resembling add-on packs.