Long-term evolution of eRO-QPE4, separating flux states between quiescence and eruption. eROSITA points are shown as circles, squares for XMM-Netwon, diamonds for NICER and stars for Swift-XRT. Swift-XRT and NICER eruptions points are considered such based on their flux level similar to the range shown by XMM-Netwon. All uncertainties are 3σ. The lower-panel shows Swift-UVOT data with the UVW1 (light blue) and UVW2 filter (azure).