Hi there, from the group of candidates I've coached in the past couple of weeks, there's only been a couple who have had their interviews rescheduled, and none for whom it was cancelled. Recruiting is one of the practices that can function almost as smoothly as usual during this crisis, given most applications come through online channels and many interviews were conducted via video conference already.
Did they confirm you passed the first round, or was there no communication after the final interview? Either way, they should be in touch with you, just gives context to the situation.
I'd definitely follow up with the recruiter for an update - they should still be working and should be continuing with the process, whatever the outcome.
Best of luck!