CatLight uses Jira API to get the list of filters. According to Jira API docs, only the following filters will be displayed:

• filters owned by the user.
• filters shared with a group that the user is a member of.
• filters shared with a private project that the user has Browse projects project permission for.
• filters shared with a public project.
• filters shared with the public.

If you don't see any Jira filters in CatLight monitoring settings, try saving a new filter in Jira. You will be its owner, and it should be displayed afterward.