Comparison in terms of morphology between model snapshots and reconstructed images. Top row: intensity image of one of theselected best snapshots (number 065) for 2016 in relative intensity (left), and for snapshot 067, which is the best choice for the 2019 data (right). Middle row: same snapshot images as in the upper row after being convolved with a 0.6 mas beam, rotated to match the observed morphology, and corrected for the limb-darkening effect with a cut-off radius of 0.75 stellar radii. Bottom row: reconstructed observational images after LD correction and with a cut-off radius of 0.75 stellar radii. In the middle and lower rows, the contours are drawn at levels of 55, 77 and 85% of the peak intensity for 2016 (left column) and at 40, 50, 70, and 87% of the peak intensity for 2019 (right column).