I have raced the first 3 stages in the SISU KQOM series. I was upgraded from D to C category before the 3rd race, but the series standings only show me having completed 2 races. Can this be fixed?

No, Zwiftpower will only show your results per category. So you will have 2 in D and 1 in C.

It can’t cumulate your points across multiple categories.

Thanks, I rooted around and found the 3rd