US Immigration from Ukraine

I requested an NVC expedite for my wife (CR-1) and step-daughter (CR-2) on 3/30/2022. They were both approved in one email on 5/26/2022. The files were sent immediately to the consulate without being reviewed. The Frankfurt consulate will set the interview date, not the NVC.

FYI

Hi, does anyone here have been doing medical examination in Kralovia Poland? Or knows how what is the waiting time for scheduling an appointment?

Hi does anyone knows where Ukranian can do medical for IV visa, Case in Frankfurt, but a need a place in Ukraine or Poland that don't take to long. Thank you.

The US embassy in Kyiv reopened on Wednesday after a three-month closure due to Russia's February 24 invasion of Ukraine.

"We are officially reopening operations," spokesperson Daniel Langenkamp told Reuters shortly before the US flag was raised above the embassy. He said a small number of diplomats would return initially to staff the mission.

Consular operations will not resume immediately and a no travel advisory from the State Department remains in place across Ukraine, Langenkamp said.

https://www.france24.com/en/europe/20220518-live-zelensky-address-beamed-in-to-cannes-as-festival-kicks-off

Finally my fiance and her kids arrived in the US this week. Can I apply for their SSNs as soon as we get married or can do it now or have to wait for a certain stage to cross in the temporary green card process where the EAD and Parole visa will be issued? I wanted to add them to my medical insurance and wondering can I do so without their SSNs. Appreciate your response. Thanks!