My shared decks are missing

I had a couple shared decks for an Oneida language class,
but they are no longer available (I think I put them up last fall, 2020). Is there some problem with the decks? I had received permission from the researcher in case any audio clips may be under copyright (and had included acknowledgement in the description).

I use Anki almost daily, so I couldn’t have been due to inactivity. Apologies if I missed a notice of some other problem with the decks.