US Immigration from Bangladesh

I am a U.S. citizen bringing my sister and her family (F4 Visa). The DS-260 asks for the civil documents. The issue is I submitted the DS-260 according to the passport. My sister's Bangladeshi passport has our father's name on it. The father's name is missing two initials. So it's supposed to be: "S.M. first name, last name." But the passport is missing the "S.M" part. However, on both of our birth certificates and her National ID has the "S.M" is there. Therefore, on the DS-260 online application (which I submitted), I forgot to add the "S.M" since I was filing it out based on the passport, which do not have these intials. Our father passed away when I was an infant, so I made this silly mistake.

What should I do? I cannot change the passport, since I already submitted the passport's ID # and expiry date. What issues will this pose?

We are filing the F4 sibling visa. For the principal beneficiary's father's name, I forgot to put initials (which goes before the first name) on the DS-260. So the name is supposed to be A.K _firstname_ _lastname_.

I forgot the A.K., in this case. In the passport and birth certificates, the father's name has "A.K." in it. Will this be an issue? And how do I change the mistake on the DS-260?

I am filling out the DS-260 (F41 Visa Class) for my sister, her spouse and her child who live in another country.

My sister's child is going to turn 21 in about 7 months. By this time, I will turn in the Visa application and the necessary documents.

We waited 14 years to have this I-130 petition approved, and I would hate to have any issues because of this.

So, will there be any issues to the case because of his my sister's child's age?

Does anyone know the specific requirements of uploading Photographs to the online CEAC Visa portal? I know that on the day of the interview, you have to bring a 2 x 2 picture on photo paper. But for the online CEAC portal, are there any size or quality specifications besides the fact that the file has to be less than 2MB?

I have two jobs, but in Part 6 of the I-864, it says: "Employed as a/an" which implies that it leaves space for one job only, as it is a singular phrase. I have two different job titles for my two jobs.

So on #1, do I only put my job title for Employer #1? What do you suggest that i put for #1 if my job positions for my two jobs are different? (Btw I cannot type any slashes to separate the job titles in #1)