You should also write to the National Merit Scholarship Program. I’m not sure what the options are, but there are alternative ways to qualify…but you have to follow the directions and write them, as detailed here. https://www.nationalmerit.org/s/1758/interior.aspx?sid=1758&gid=2&pgid=424
The entire junior class attending Chicago Public High Schools has also missed PSAT/NMSQT due to a teachers strike, which ended yesterday. Good luck.