Flights disappeared overnight

I’m going to Sweden and Switzerland this coming July and yesterday I was gearing up to book a nonstop from EWR-ARN (UA68) and another nonstop from ZRH-EWR (UA9748). But today, both nonstops were gone. Now there are only options that have stops in the middle. Any idea what could be going on? Is there no more non stop service?

What’s weird is both of these flights seem to still be on the Lufthansa and Swiss Airline sites respectively.