for last 5 days until now, its very hard to connect to multi algo port (4xxx), my rigs keep move to another backup pool (most of time) or 3xxx port backup pool (sometime), check it out plz, thanks.
Make sure you have
NeoScrypt support: either update to Sgminer 5.0 develop (
https://www.nicehash.com/software/#sgminer) or disable NeoScrypt factor until you update to this miner. You can disable NeoScrypt multi-algo algorithm by setting f8=0 on
ALL your algos .... for example f0=1;f2=0.5;f3=4;f4=3;f5=500;f6=3.5;f7=16;f8=0 ... more info on
https://www.nicehash.com/multialgo/#finetuning (of course, since NeoScrypt is quite profitable, we suggest you to upgrade to latest Sgminer 5.0 develop as soon as possible).