eROSITA, EPIC-pn and EPIC-MOS2 spectra of the entire observation, including the best fit relativistic reflection model (upper panel, brown, solid line). Middle panel: residuals of the best-fitting empirical model with a blackbody used to describe the soft excess and lower panel: residuals for the relativistic reflection model. The spectra have been re-binned for plotting purposes only, for visual clarity. The spectra of EPIC-MOS2 and eROSITA were re-scaled to the flux normalisation of the EPIC-pn, using the best fit detector constants.