Please check that the tightening of the screws that connect the cross members of the legs to the frame are correctly tightened. Also, revise the anti-vibration pieces
Sometimes if the bolts have been loosened it could produce some noise by the slight movement of the torsional forces applied by pedalling.
Lubricate the bolts and thread.
Also, could you please lubricate the area where the cleat hooks and the pedal thread are in addition to checking that no sweat or humidity has entered the handlebar and seat posts, in which case dry well and lubricate (avoiding the area where tighten the lever).
We recommend a dry Teflon or silicone lubricant.