Error
Failed to download package. Download it and install manually from https://www.joomlacontenteditor.net/index.php?option=com_releases&task=update.download&file=pkg_jce_pro_2920.zip.
Going to
https://www.joomlacontenteditor.net/index.php?option=com_releases&task=update.download&file=pkg_jce_pro_2920.zip.
gives also an
404 Not Found
Bad first impression and experience with JCE.