well.....1Referee is probably right that it's going the way of clarkmoody.
Yup, migrating to another similar services is the obvious step forward (although the look&fell at cryptowat.ch is not 100% as I'd like).
I use 1w for the interval.
If you work with 1w intervals, an outage of a couple of hours is not visible so badly in the price candlesticks. It should be visible though in the volumes.
Us, mortals that use hourly (or even faster) intervals clearly see the problem. And it's not its first occurrence.