This morning I noticed the count for Schedules (for scheduled recordings) was only 65, which is way less than normal. Looking into it, I realized the Programming Guide was missing data for any shows that started on or after 7pm of March 27th. The guide usually covers just under 14 days, while March 27th is less than a week away.
So I dropped Elgato Support a note figuring I'd hear back from them sometime Monday. Instead, they replied a few minutes later - they're aware of the problem and asked for additional information to help them track down the issue.