Please, those with an Antminer L3 mining on nicehash (or ever mined), could you check your miner's hardware version? This is what I see in the "System Overview" tab:
Hardware Version: 1.0.1.1
Kernel Version: Linux 3.8.13 #22 SMP Tue Dec 2 15:26:11 CST 2014
File System Version: Tue Nov 22 17:55:48 CST 2016
Maybe my miner has an old firmware? The kernel is from Dec 2014...
Did you do any firmware update? I could find NOTHING about Antminer L3 on Bitmains web.