Who should i contact in order to help me with nvo ?
Use this thread or their Slack team.
You are looking at the wrong blockchain explorer. The traditional ones can't really see what is going on. Take a look at the counterparty explorer, i.e. there you will see your tokens:
https://xchain.io/address/164brACZzdB6EdYUsz34wXbjwUujo7ueVs.