My parents had gotten their Green Card through me, at that time my father was almost ending his job in Saudi Arabia so they spent very little time in the US. After that, COVID struck and they couldn't travel to the US. My father tried contacting the US Embassy (now they were in their home country Pakistan) but everything was closed. Once the embassies opened they both visited the US Embassy in Islamabad with their doctor's letter and all proof of previous attempts of correspondence. But the officer denied them entry as they didn't have strong ties with the US.
They still have their valid Green Cards. They were asked to re-apply for immigration. We started I-130 and it got approved and now we are asked to submit form I-824 as they are outside the US. Now at this step, we came to know that we received an approval notice for just my father, and upon checking we came to know that we only submitted a single I-130 for my father.
Now, before proceeding further I want to make sure we are on the right track and not making any further mistakes. Please guide what should be done.
Thanks