Adding to VTWilson's comment: The practice I support has an on-prem version of AC, we've been experiencing a couple minor / moderate issues since 12/29. (Charts merging & CDA translation failure). I've called and left two voicemails, sent multiple emails, and attempted to use the chat support (always offline when I try).
Granted it was a holiday week, but after 7 days it's a bit unreasonable to get 0 response. This hasn't been my experience before.
The issue in my opinion is a lack of dedicated AC support team members. This is only a guess, but I'd imagine Harris' support team provides Tech support for multiple product lines, and is probably short staffed / has had some turnover lately. Coupled with the holiday weeks, it's likely that no one has even looked at the queue or is prioritizing Tier 1 issues only. Poor management.