I am writing a follow up guide soon

https://steemit.com/hive-101145/@upvu/qfgp12

Hi @alexmove.

upvu.site only works by keychain(chrome extension application).

upvu.site is just monitoring system.

You can join @upvu service by delegating Steem Power or sending STEEM to @upvu account.

Case : Delegation Steem Power

From the day after the delegation, upvu will vote once a day(Based South Korea Time 0~24) according to the ratio. In the addtion you will be received rewards 7 days after delegation.

Case : Steem transmission

You can receive UPVU tokens within 5 minutes when sending Steem. UPVU has the same effect as 1STEEM POWER(voting and reward as well).
If you send UPVU to @upvu, it will be refunded to STEEM in 1:1 ratio in between 1~4weeks.

Thanks!