This is odd.
The intro in my chart has both opening and closing repeat signs. It does correctly plays 8 bars on my device. I can't explain why it only plays 4 bars on yours. I've played the entire song along with the recording, it follows exactly the same structure.
The bass clearly plays a B on the downbeat over the B-7 chord. So it's not a B-7/E (or E9sus). It's just a B-7.
There's no need to write the chords again at the beginning of each row. If it's the same chord, you can keep using the double repeat sign until there's a new chord.
The rhythm markings are just symbols (Unicode) entered are text comments