50% failure rate for CA submission completed successfully

On 3/26/18 my son looked at his CA account portal and discovered that two of four applications did not submit. They would have been filed on 12/28/17. He contacted one of the affected schools, whose Admissions Office consulted his CA portal and told him they do not have his application on file. I checked my credit card transactions and found that there were no CA transactions for the two schools. However, he and I made the submissions on 12/28 together. Further, the four green check marks that appeared at the end of December were reduced to two yesterday. Has this happened to anyone you know?