Something appears to be amiss with the driver (or settings in the driver). This log statement:
[07.09.2016 23:55:17] [DEBUG] [Pier Flip Thread] Meridian Flip: Telescope failed to perform meridian flip
means that the pier side before and after the flip were the same. Following this, it usually means the mount was issued a slew command and it decided it did not need to flip. Unless your mount can perform a meridian flip in 6 seconds, it looks like the mount did not attempt it...
[07.09.2016 23:55:11] [DEBUG] [Telescope Thread] Telescope: Slewing to J2000 RA: 21,5772875308944 (21h34m38,24s) Dec: 57,4922027576934 (57°29'31,93")
[07.09.2016 23:55:11] [DEBUG] [Telescope Thread] Telescope: Slew received J2000 coordinates, mount requires JNOW, converting...
[07.09.2016 23:55:11] [DEBUG] [Telescope Thread] Telescope: Slewing to JNOW RA: 21,58653 Dec: 57,5708
[07.09.2016 23:55:17] [DEBUG] [Telescope Thread] Scope reports it is done with synchronous slew, verifying...
[07.09.2016 23:55:17] [DEBUG] [Telescope Thread] Telescope: Slewing has completed
We would need to see the mount logs to be sure. They would probably provide further insight... your mount reports it was indeed past the meridian, but did not feel inclined to flip.