Hi @acrobate67, thanks for testing that. I have tried finding the documentation on the website of WPML, but it is hard to find in the documentation..
I just realized.. are you using the new beta version, or the standard version? I was thinking about the new version (which is stable to be released, it just hasn’t happened yet!) when I was looking through the WPML docs. I think it should work.. You can download the new version here:
https://wp-tiles.com/blog/announcing-wp-tiles-1-0/
Alternatively, you can set the category in the new version, by giving the category names, separated by commas, like this:
[wp-tiles category='uncategorized,testcat,etc']
(again, v1.0 only)
Mike