US Immigration from Romania

Hello,

I am looking for some input to our situation, which is:

I initially entered the US, got married on the K-1 visa ( didn't get to apply for adjustment of status and etc) I was in the US for 4 years, we had 2 children in the last 2 years there, my husband retired from the Army, and since my RO passport was expiring, we decided to see if moving to Romania was a better lifestyle change for us. But fast forward, my husband hates it here and he s been wanting to go back for a while now.
Our oldest son is 5 years old now , so he needs to start school this year too, which makes it all so much more frustrating. My husband has been trying to get a hold of the US embassy here, but they never picked up the phone.
My husband( and me) wants to move back, get a house and put the kids in school. I know Romania s Embassy doesn't have a DCF, so all this ordeal has to be filed under special circumstances, but they don t specifically say anything about children issues in their list of dire circumstances to file for DCF. Would it be safe to try and go this route since our son needs to be in school this fall, or we need to make another plan?

The CR-1 route sends us to DCF, since we are both in Romania along with our children.
I am trying to get as much insight possible since my husband just gets bummed out every time he thinks about the whole process.

Thank you,

With local offices closed for in-person appointments, has anyone mailed in their original documents to an SSA office with the app? If so, through what service? (USPS, UPS, FedEx, etc) I'm debating the wisdom of doing this with my fiance's passport. I'm worried it would be lost.