Nicehash with ASIC USB Miners & Raspberry Pi not working

[ukoa]

When I first started it there was a small bit of action. After a few seconds it stopped. Now nothing. I have 4 USB miners. They're showing activity but I'm seeing nothing on the website stats.

Is my command line correct?
bfgminer -o stratum+tcp://sha256.usa.nicehash.com:3334/#xnsub -u 1Aog93G1hgo5uJqxCDa9yXPQ3a32QMi4Pe.Worker1 -p x

Thanks for any advice.

UPDATE:
It's been 2 hours but the time on the site says only 4 mintues. before it said 6 minutes.

I'm getting this on occasion:
[2017-07-04 10:25:13] Pool 0 stratum+tcp://sha256.usa.nicehash.com:3334/#xnsub not responding!

[-ck]

Nicehash support thread:
https://bitcointalk.org/index.php?topic=893133.0