I received my machine yesterday, but still did not start mining. Are you still mining with UUpool ? Is it possible that you could share some reviews with uupool (like whether hitting rewards, if they are paying out ect) ?
So I was one of the lucky few to receive my B3 Early today and I wanted to post some of the initial problems with setting it up so far.
First Antpool seems to be the only pool online at the moment
Second the Domain name doesn't seem to resolve yet so for the URL you should use stratum+tcp://47.95.178.159:6666 for now until there domain resolves stratum-btm.antpool.com:6666
You can go on and manually create a worker name or antpool will automatically create one for you i used "MyAntPoolID.B3"
Miner Setup

Here is a screen shot of it running I was one of the first in the US to join antpool

And here it is coming online to Antpool

Antpool Growing

Tracking Network Hashrate
http://miningpoolstats.stream/bytomEdit 5/4/18 Looks like antpool is down I recommend mining to UUPOOL for now
Use this for URL: stratum+tcp://btm.uupool.cn:9221
Worker: yourwallet address