If you are on iOS or Mac you can easily do an intro by starting playback from the last 4 or 8 bars. Choose your measure and tap and hold on iOS or double click on Mac.
Did access the forums from your device directly (not from a computer)?
Did you use the second post (Android specific) in the jazz 1200 Standards thread?
Did you try using a different browser like Opera?
When you press the edit button one of the options is Duplicate.
There is no 11/4, you'll have to write one bar in 6/4 and one in 5/4 or whatever other combination you prefer.
Unfortunately I'm at a loss.
With Background Audio turned ON, it works for me and as I understand everybody else.
Try perhaps restarting your device.
Perhaps you have other apps open that are using the audio function?
Not sure how you 'lost' your playlists. There is currently no iCloud support in iReal b.
If you made a backup you can get all your playlists and songs from there.
If not you'll have to got the playlist here in the forums.