download 1.4.3 if you really had devfee problem its fixed.
Also if devfee got stuck you didn't have those :

[2018-04-17 10:52:16] Pool sent a new job (ID: 606098711433573)

like hitmandn had.

[2018-04-17 10:53:05] Pool difficulty: 1531728

 this is an insanely high diff the pool sets, it's a badly setup pool.
Try to set a static diff on the pool if they have that option.