Modelling of the WPS 54 TESS light curve. Top panels: phase- folded light curve (top-left) with the periodicity corresponding to the largest peak in the periodogram (top-right panel), including the 1E (blue) and 3E (red) models and their corresponding residuals. The model is not satisfactory due to the presence of additional signals. Bottom panels: phase-folded light curve (bottom-left) with the 1.73 d periodicity after removing the sinusiondal patter corresponding to the 3.45 d (potentially the rotation period). The 1E (blue) and 3E (red) models are shown, as well as their corresponding residuals.