Just to double-check, if you go to the category do you have the bell option set to anything other than Muted?
Another thing to check is whether it shows up for other people or not. If you use a private window or a test user can they see it on the category page?
Safe mode is another good fault-finding tool, in case a theme component or plugin may be having an effect somehow.
If you can share a link to your forum we may be able to see something (either publicly or by PM is fine 
)