I have that person license file as well. i am using the same modules with same license key and also cashe but i am still getting the same error.
However in 2.3.0 beta 1 and modules 2.3.2, when i hit export to ios or android i get error for "being downloaded".
Another update is that 2.3.2 modules work fine with 2.2.9! i am still testing export builds with 2.2.9
also maybe
we can try buildbox 2.3.2 1922 (currently i have 1924) but modules are 1922.
While you were testing export modules 2.3.2 with 2.2.9, did they worked?
Did the "Gradle" file was created?