US Immigration from Nigeria

Hello everyone. My husband(petitioner) and I are at the NVC stage, we were asked to submit proof of relationship between my husband and my father in law (household member). What documents can we use? Would a birth certificate suffice? Has anyone else dealt with something like this before? Thank you.

Happy new year all- Does anyone have an invitation letter template they can send to me please? I would really appreciate it.
please send to - [deleted]

thank you in advance!

Please advice! What would you do if you had two marriage certificates. One was issued by a religious society and the other is civil. The dates on both are different. We initially used the religious marriage certificate but was rejected by the USCIS and we later did the Civil wedding.. 1 year apart and my wife was already pregnant... Our wedding date with both USCIS and NVC is that of our religious wedding, (since we already filled the form and everything before the certificate was rejected) though they have both certificates with them. The question now is which date should I give when asked "when did you get married"?

Good evening to everyone on here,on my my ds260 I was asked for my Instagram page I add my Instagram name instead of my Instagram username I thought it was the same so I Gave my Instagram name I hope this is not a red flag for me.

Who knows if one way flight ticket is allowed when entering US with an Immigrant Visa?