Meanwhile HiveOS don't add the algo Nexa in lolMiner, here is a guide to mine it:

https://github.com/Lolliedieb/lolMiner-releases/wiki/Guide-lolMiner-1.66---Nexa---HiveOS

 Custom URL : https://github.com/Lolliedieb/lolMiner-releases/releases/download/1.66/lolminer-1.66.NEXAHiveOS.tar.gz