“Achtung Spitfire!” Campaign Problem

[Vishnu]

I tried several times to get going in this campaign yet when I complete a mission and land, it says mission failed.   I follow the WPS, and land at the specified airport afterward and still fail.   It’s disappointing after having a great flight with successful kills only to be denied further advancement in the storyline and then having to restart the whole mission. 

 

I’m also having the same problem in “Ten Days of Autumn”.  I go on the train busting mission.    Do the job, land at home.  Mission failed. 

 

Any help would be appreciated. Thanks!  ?