I often check status of all my rigs via ethermine.org and sia.nanopool.org.

Then:

1) Productivity was down, my rig is not working.

2) I used teamview to check all the rigs 1 by 1 and try to know what is going on.

3) Pool still working (with shares accepted) but sever is changed from asia1 to us1 and I did not receive any ETH to my wallet address. With SC mining, it change from mining of SC to mining of DCR instead and I also can not receive any SC to my wallet address too.

That's all, if you know why please answer me.

Thanks a lot.