Hi!
Thank you for all the details it helps a lot!
There was an change in the update server just yesterday, the plugin may try to access the old one yet temporarily until the DNS records are updated. The “package not available” issue should go away within 24 hours. Can you please re-try the update a bit later and let me know? Thank you!
The most likely issue with the category filter is that items “uncategorized” might be showing by default. Can you please try to change this option: https://i.imgur.com/zm5ecqn.png
