2 new changes started at United since Apr 1. First of all, they are resuming full service on planes, so they will be serving meals, and you can order kosher.
2nd, and this is according to a helpful manager on the premier phone line, they completely stopped issuing ETC. I had a reservation that was booked in part with an ETC, and was cancelled before Apr 1. At the time, they issued a future travel credit, which is only valid for 1 year, and can only be used for that traveler. I requested to change it into ETC, but they said it is no longer possible. They are not issuing them at all any more.
Nir sure if I should huca, or is this really their new policy, but the manager who told me this was very helpful, and she herself did not like this new policy...