Previous versions of User Role Editor Pro are available for download now. Login to role-editor.com open the download page and scroll it to the “Previous versions” section.
Some times you need to revert back the installed version of User Role Editor. It’s not much difficult until there was some change in the used data format. So if it was not took place according to the recent changes log, you can just replace wp-content/plugins/user-role-editor-pro folder content with the files from the selected previous version .zip archive. Do not forget to deactivate User Role Editor Pro plugin before this operation though.