That data unavailable error is relatively common and can be misleading.
We don’t recommend removing/re-adding accounts as a troubleshooting step. It will cause duplicate data to pull into your sheet, you could be unable to add it back again without an error, and it removes error logs on our back end that are helpful for troubleshooting.
When there is an institution alert for an institution, that means our team is blocked from reaching out to Yodlee regarding that specific institution. It doesn’t mean 100% of accounts will be impacted (which is why you can see some Amex accounts working but not all) but it means Yodlee is already aware of a widespread connectivity issue and is already working on it. It could be that anywhere from 10 to 100% of accounts are failing under that institution and by posting that alert it means Yodlee is already taking action to fix it.
If you are still unable to connect after the outage is gone, I’d recommend reaching out to our support team via the chat window in the lower right corner of the Console at https://my.tillerhq.com/