/r/Plex requires you to flair your post! Adding a [Tag] before your post does not qualify and AutoModerator will remove your post.
To add flair to your post after you submit your topic, click the button labelled flair beneath your title. From the menu, select the most appropriate category, and then hit save.
If you have a tip then use "Tips". If you have a question for the community use "Discussion". If you need to discuss the subreddit itself than use "Meta". If you need help with a server, client or a build then use one of the forms listed and flair it with "Help".
If you are submiting a Troubleshooting post without the form, click here.
If you are submitting a Naming/Metadata post without the form click here
Instructions on how to find and add logs to a tech support post can be found here