The issue had been resolved completely approx. 48 hours ago. We've been monitoring the situation since then to make sure that no new issues arise.
We're now working closely with the data vendor to learn more about the root causes and make sure that they are eliminated now.

The data vendor has recovered from a major outage and now is back to work. The gaps are not filled completely yet.
Some of the alerts on cryptos has failed as a consequence of these issues. They will be revived automatically as soon as the core problem is gone.

The data vendor is experiencing a major outage now. Most crypto charts are not available. We have reported the problem.

An update from the data vendor:

We have a delay in resolving the first gap, working on pushing this as fast as possible.

Updating estimates:
Gap: 2021-04-10 01:56 - 2021-04-13 00:00, ETA: 2021-04-14 12:00
Gap: 2021-04-13 00:00 - 2021-04-13 00:40, ETA: 2021-04-14 12:00

Currently, the data feed is processing historical data to fill the gaps, below there is a list of the gaps with the ETA resolution assigned for each gap:

Gap: 2021-04-10 01:56 - 2021-04-13 00:00, ETA: 13th Apr 09pm NY
Gap: 2021-04-13 00:00 - 2021-04-13 00:40, ETA: 14th Apr 08am NY

The issue was resolved yesterday, thanks for your patience.

The core issue is now resolved and most of the charts are fine now. We're monitoring the situation; we're going to re-activate the alerts as soon as we're sure that the situation is stable.

Some alerts on cryptos have been deactivated by the system, because it lacks of candles for calculating the alert conditions. We will re-activate these alerts automatically as soon as the data vendor restores its functionality.

Our crypto data provider is experiencing a major outage. Crypto charts are either not available, or lack of candles. We have reported the issue to the data vendor and now monitoring the situation.