I have four antMiner L3+. I use Blissz firmware. Never any problems until now....All four are mining away on Nicehash but the GUI doesn't show any activity whatsoever. What the hell is going on? Not sure how to post a screen shot but there isn't anything there anyway. It's like the miner hasn't even started. I think it's weird that all four are doing it. I'm mining on NH and I tried another pool just to check...same thing. Help!
Are you using the lowest voltage option in the config page? if so, try switching to a slightly higher one and that should solve your issue, if that turns out to be the case you would have two options
1- keep the slightly higher voltage
2- find a newer release of Blissz (which isn't going to be easy knowing that Blissz stopped marinating his firmware due to GPL3)
If the above doesn't work, then it's your browser, use a different browser or clean the cache on the current one and that should fix it.