akobel [1] filed a deletion request for masterpdfeditor4 [2]:
CodeIndustry stopped distributing the old version 4 of
masterpdfeditor. Since the binary cannot be added to the AUR (or any
other public site) due to licensing restrictions, this effectively
renders this AUR package obsolete.
Please, dear TU, delete it. Thanks.
Cheers
Alex (former maintainer)
[1] https://aur.archlinux.org/account/akobel/
[2] https://aur.archlinux.org/pkgbase/masterpdfeditor4/