“Bock Lab” blocks not showing in wpml translation-manager

Hi,
i created some custom gutenberg blocks with the great plugin “Block Lab”.
Problem now is, that these blocks will not show up in the wpml-translation manager.

i marked the blocks as translatable.
i also can select and use the blocks in gutenberg in both languages.

But the blocks will not show up in the translation manager.

has anybody have an idea?

thenks a lot
Marcus