  The T Tauri star CVSO30, also known as PTFO8-8695, was studied intensively
with ground based telescopes as well as with satellites over the last decade.
It showed a variable light curve with additional repeating planetary
transit-like dips every ~0.8h. However, these dimming events changed in depth
and duration since their discovery and from autumn 2018 on, they were not even
present or near the predicted observing times. As reason for the detected dips
and their changes within the complex light curve, e.g. a disintegrating planet,
a circumstellar dust clump, stellar spots, possible multiplicity and orbiting
clouds at a Keplerian co-rotating radius were discussed and are still under
debate. In this paper, we present additional optical monitoring of CVSO30 with
the meter class telescopes of the Young Exoplanet Transit Initiative in Asia
and Europe over the last seven years and characterize CVSO30 with the new Early
Data Release 3 of the ESA Gaia Mission. As a result, we describe the evolution
of the dimming events in the optical wavelength range since 2014 and present
explanatory approaches for the observed variabilities. We conclude that
orbiting clouds of gas at a Keplerian co-rotating radius are the most promising
scenario to explain most changes in CVSO30's light curve.
