It seems that dev has not answered the participants' questions for a long time and we are very concerned about the development of NYX
I also tried to contact with their team about issues involve to systems mining and my wallet but feedback is very slow and sometimes not received their answer. May be they must work so hard
For a better support you should join our discord channel
https://discord.gg/yJzk6NxYou can also check our tutorials and make sure you did all the steps to create a masternode.
We don't have mining problems on the network, if is a pool problem then you should contact the pool owner.
Thank you
P.S. Be sure that you have v2.0