We have tickets to arrive in Buenos Aires from the U.S. this Friday. My husband is a citizen and I am a permanent resident. We have our PCR tests underway, and I know about the DDJJ form. But on the Delta website I see that we must have the CuidAR app installed. We have, in fact, succeeded in downloading the app to our phones, but we can't get it to work because it refuses to recognize either my husband's citizen DNI or my permanent resident DNI. I have tried the scan and also tried entering the dni and the tramite numbers manually. NO luck. In the process, I did succeed in getting the MiArgentina app and setting up those accounts. Any advice or suggestions?