Long-term evolution of eRO-QPE3, separating flux states between quiescence and eruption (which includes the former). eROSITA points are shown as circles, squares for XMM-Netwon, diamonds for NICER (the brightest eruptions in the light curves of Fig. 8) and stars for Swift-XRT. All uncertainties are 3σ. Red contours on orange points highlight observations in which the identification of an eruption is less secure. White symbols for eRASS1 and eRASS2 correspond to the flux of the full observation without separating different states. Horizontal lines highlight ROSAT and XMM-Newton archival upper limits, as stated in the legend.