ray
commented
3 years ago Appveyor removes artifacts after 6 months. Since there hasn't been any activity in awhile to generate new builds they've all been removed.
A new build has been pushed & I published it as a github release which won't have the same 6 month limitation. Stable builds should be released on github to avoid this in the future.
Current build or older builds on builds tab (Windows) on rscustom.net generate same return message:
{"message":"Artifact not found or access denied."}