Almost certainly not, unless you failed a knockout question like work authorization or a required license. ATS software parses and organizes resumes for humans; it does not silently reject on formatting. The more likely story is less cinematic: a busy human scanned it for about 7 seconds and moved on.
Blaming the machine feels better because a machine can be gamed and a shrug cannot. But the evidence points at the first human scan, which a Ladders eye-tracking study clocked at about 7 seconds. If those seconds hit a wall of dense text with no clear title or result, the scan ends.
So run the two real checks. First, confirm your file parses cleanly, selectable text, single column, standard headings, so the human sees an intact record. Second, make your first lines carry your last title and one concrete result, because that is where the scan goes first.
“The villain in this story is not a computer, it is a person with a coffee and forty other resumes.”
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