Thanks -- the account logs don't seem to show any trace of that study during the mentioned dates. Did you mean 2017 instead of 2019? What I'm seeing are logs for this study
running from March 9, 2017 to June 15, 2017.
The account activity logs, however, also suggest that said study's data was deleted in September, 2017, which would mean the files are not recoverable after this long period of time.
Is that possible or is that the wrong study? When did you last access the study's data in your account?