I am applying to graduate school for mathematics. The school I am applying to requires the GRE subject test. I was unable to take it, however (both exams in Spring and Fall 2021 were cancelled due to the pandemic). I ended up emailing the generic grad school admissions office and they said that it would be alright if I submitted without the subject test (although they didn't really answer my question if my application would be seen the same as others--only something about "holistic" review).
There is no place on the application to mention how COVID-19 affected my application. So, I was wondering if I should mention the fact that I did really try to take the GRE subject test in my statement of purpose, which is the only place I can think of mentioning it (I guess I would like the admissions committee to know explicitly, instead of the email I sent to the generic grad school email). Or, should I just not even bother mentioning it?