NONE OF THE TABS ARE FUNCTIONING UNDER "AFFIDAVIT OF SUMPPORT"

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I’m a US citizen and I have filed I130 for my son who was under 18 three years ago. In May of 2022 NVC sent us a welcome letter. I have filed every asked documents but they wanted a joint sponsor. I got help from one of my friend. He is the approved joint sponsor already but he is married and I had to make an application for his wife. I made a mistake because I have filed I864 (joint sponsor) instead I864A (household member) for her. I asked NVC to cancel her as joint sponsor because I can’t set up her as household member because of the same name. 
They didn’t cancel her joint sponsor status but still want me to submit every 2021 W-2 and 1099 and schedule form for them. This is the other problem because none of the tabs are functioning under “affidavit of support”.

 I can upload documents under my son the applicant’s name only but NVC doesn’t accept it. I have sent several inquiries but I get the same automated answer every time and no one cares I’m not able to upload anything because the AOS button doesn’t work. They don’t have any phone number anymore. I’m uploading the asked documents every time and they don’t accept it because I have to uploading under the joint sponsor’s name but I can’t because of the disfunction of CEAC. This problem caused 11 months of delay already and I don’t have any idea how to be able to solve this. I have mailed every documentation for the NVC but they didn’t react so they didn’t accept it. I have attached a letter to let them know the problem but I didn’t get any answer.

Please someone who had the same problem help me. Thank you 🙏