So, no I-864a. That was the problem with what you originally posted. The EZ version is fine if all the income is from W2 employment. An I-864a is used by a household member who is not the foreign spouse, whose income is being combined with yours. You will get better answer more quickly, if you provide accurate information.
So YOU submitted the I-864EZ. "WE" (you and another person) did not submit anything related to the affidavit of support, just "YOU". Just ignore the case note then.