Thanks, you may want to edit yourself hat part and see if you find some more mistakes or inaccuracies of this kind in there.
I was also wondering if the author (GFD) or the permissions holder (Patchou) would allow to upload footage about Plus! like its logo and a series of screenshots that may illustrate things described in there. Paperless already did with the sponsor agreement, but did not specify any licence notice for the picture, can we count on your express written consent to user that material or should we stay constrained to the "fair use" of copyrighted media?
This would only mean that, although the work is copyrighted and stays copyrighted, its autors or rights holders would allow the specific use in Wikipedia and specially limited to refer to Messenger Plus!.