I'm hoping someone can help me.
I have purchased the Albatros D.II and also the modifications for it. In game the modifications are available for the Albatros D.II but not for the Albatros D.II lt.
Is it possible to use aircraft modifications in the Albatros D.lI late?
For purchase, the two variants of the plane are treated as one and so should be the mod pack. If you enter the hangar of the DII lt, the mod package offered for sale is the same one as for the DII, so it should be available. It's the same with the Hanriot, the mod pack works for both variants. If your purchased mod pack is un-selectable, there's a problem.
I suggest you submit a ticket accompanied with a capture of the Google translate page showing the issue translated into Russian, otherwise they will ask for screenshots.