I am not sure, but I believe they are just hidden under header. Try option Customizing ▸ Albums settings ▸ Albums list ▸Hide content under header ▸Turn it off.
I see one category have showed up. I think you have to refresh categories in album, as they sometimes get corrupted after import. Just simply go and edit each album with different category, and click "update".
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Link would help here a lot.
I am not sure, but I believe they are just hidden under header.
Try option Customizing ▸ Albums settings ▸ Albums list ▸Hide content under header ▸Turn it off.
With kind regards.
http://www.cyrilpreiss.com/
Hide content under header is turned off, and album list filter is enabled
With kind regards.