"So, which is correct: canceled or cancelled? Well, both are! Canceled is typically preferred in American English while cancelled is the standard in British English. Plus, it’s OK to use cancelled in the US, too."
Lord save me from the man who knows how to spell a word in only one way ~ Mark Twain
I grew up spelling it “cancelled”, but I am old. There are some other words, e.g., “catalogue” vs. “catlog”.