Sleazy Fork is available in English.
Links various membership platforms to Kemono and Coomer.
Seems like they started using new, unique Gumroad user IDs (e. g. 3816514542309) in addition to the old username-like ones (e. g. trylsc).
I just published version 2.10.0 with support for both, since Kemono also seems to have pages for both. For example:
These pages both belong to the same creator – the first one using the old, the second one using the new ID format –, but contain different (amounts of) posts.
TL;DR: Fixed, thanks for the report.
looks like gumroad support break again?