Issue

Developers install this app and forget the forks. And the app keeps synchronizing those unattended forked repos—for example, jessejay-ch/content#2 . The MDN maintainers are still getting spammed with synch notifications, and the fork owner is unresponsive. This also wastes GitHub resources.

Solution

Github turns off the workflows in inactive repos after 60 days.

To prevent unnecessary workflow runs, scheduled workflows may be disabled automatically. When a public repository is forked, scheduled workflows are disabled by default. In a public repository, scheduled workflows are automatically disabled when no repository activity has occurred in 60 days.

On the same line, could you make the pull app stop updating the sync PRs after a month?