Page Not found

My site was working fine for uploading my webcomic. Just recently there’s been a problem, and I don’t think I changed anything.

My website is

http://www.wineinthewillows.com

When I upload and publish a comic, it doesn’t appear. It just says ‘page not found’ when I try to view it. Then it acts like I didn’t publish anything. I can delete pages, by the way.

I contacted my host who said

“checked the logs for any errors associated with the comic-easel plugin,
but none were found. I would contact the plugin developer to see if there
is a way to debug the issue where the comic-easel plugin is unable to
display with pages that have been uploaded. The plugin developer may be
able to provide information about possible ways of
debugging/troubleshooting the issue in question.”

Any thoughts?

https://wordpress.org/plugins/comic-easel/