Read the display as pitch information
A piano diagram is a useful way to find chord tones, especially when a symbol is unfamiliar. Identify the named notes and play them slowly before adding rhythm. Notice whether the display suggests a particular register or simply illustrates one version of the chord. The same harmony can be voiced in several octaves and inversions. Do not assume the pictured position is automatically the best accompaniment for the singer or that it reproduces the exact keyboard part in a recording.
Listen where the melody sustains
Choose a point where the melody holds a note and play the suggested chord beneath it. If the combination feels harsh, identify the melody note and compare the voicing's upper tones. A close dissonance may be intentional, or it may become clearer if one chord tone moves to another octave. Try changing spacing before changing the chord name. Then compare a simpler triad with the fuller symbol if an extension is involved. Keep the rhythmic placement consistent so the comparison is about harmony rather than a late attack.
Keep musical decisions separate from corrections
When using AudioChords, edit a detected label if listening supports a different harmony. If the label is reasonable but you choose another inversion or omit a doubled note, that is a voicing decision rather than necessarily an analysis error. Record that distinction in your practice notes. Rehearse the chosen version through the whole phrase and check its connection to the next chord. A diagram becomes most valuable when it helps you understand the available notes, while your ears decide how those notes should support the melody in the arrangement you are actually playing.