Guys you have to send a mail to them if you have not gotten your 2NL and has been scheduled for interview in january.send it up to 4 times at once ie send the same letter 4 times at the same time.God is faithful.Happy new year!
We will be watching this forum throughout Coronavirus/Covid emergencies to post information and to answer your questions about affected US immigration and visas:
https://forums.immigration.com/forums/visa-issues-during-coronavirus-covid-19-times.273/