And is it really mining 4$/day at that period of time when it says so?
It is currently mining at $4/day. It might/will change within minutes or hours, so whatever the profit is - it is just temporary.
I found that there were some DB overload lately and new stratum connections were having problem for few minutes. (I believe it was less than an hour)
Some inefficient logic caused DB server overload problem. I believe it's completely fixed and will not happen again.
I'm afraid that the issue is still present. On neoscrypt the ccminer often times out when connecting for the first time. Can you debug the issue on your side? I can give you a remote access to my rig for tests if you are interested.