Your column names, not ours
Linguiqo finds the key column under key, term, id, identifier or msgid, and the translation under translation, target, value, text or msgstr. A context column (context, msgctxt, description) and a comment column (comment, notes, note) are read when they are there.
A file without a header row is read as two columns, key and text, because that is the shape of the quick export everybody makes at least once.