This has nothing to do with the TaifunFile extension, but with the number (and not least) the size of the images. Btw, this will no longer work if Kodular is targeting Android 11 (Aug 2021), as from then on there will no longer be unlimited access to the external storage.
As already said, you have to wait for the sdk 30 update… the file component most probably will have a new method to copy a file to a shared directory, for example /Pictures