Ark Dev Kit can't add Blueprint

Hello,

So my problem is that I can’t add my Blueprint that the Dev Kit made from a Static Mesh that I’ve created out of the Industrial Cooking Pot and the Gas Collector to the PrimalGameData_BP_Generic… und Additional Structures to Place. The Blueprint that I’ve just isn’t showing up in the list and clicking the Blueprint and afterward clicking on the arrow that faces the box that says “None” doesn’t work either.
put some Screenshots as an Attachment as well.

Thank You!

(I don’t know the version of the Unreal Engine that the Dev Kit uses)