To get monetization, your subscribers' count should be one thousand and stable, and then you can start to increase watch time statistics. It's better to do it in one order, that is, place an order for the missing number of watch hours at a time. In such cases, there are more chances to get monetization approval from YouTube on the first try.
Watch Time can be sent to any video on the channel.
Channel's monetization watch time is updated 48h after the order completion.
Please note that mixing watch time views with other views, placing multiply orders with the same link before the previous order was completed makes it impossible to refill them!
To refill watch time orders, we need a screenshot from the YouTube studio analytics page showing the amount of watch time earned in the last 28 days, containing the browser address bar with the channel URL.