No, don’t use verbose. Maybe try toggling the button again, then restart PMS, come back and make sure it’s still enabled, then repeat the Plex Dance just for that 1 file (ep 5).
You can use either agent you want. Keep in mind that changing the agent at the library level does not change already matched shows. If you think this might be the issue, you can change the agent, then you will need to Plex Dance the entire series.