Prerequisites
- XWiki instance 13.10+ with created extra user
- recent modifications (comment, attachment, edit) on Sandbox space done either by the admin user (built-in user) or created user
- installed Pro Macros v1.17.1
- trial license for usage of Pro Macros
Step to reproduce
- Go to one of the Test Pages put this syntax in Wiki mode, and save page
{{recently-updated author="XWiki.Admin"/}}
Actual result

I also encounter the same issue if I call a macro from the CKEditor toolbar and pass the author value instead of Wiki editor.
Expected result
The Eecent Updated macro displays changes done by the provided author (or authors) as it currently works for superadmin if I replace the parameter for author value with XWiki. superadmin.
