How do I find about what account I used to share some documents I now need to co-edit ?

While the first possibilities to share or publish maps, I tried to use first Dropbox but as Dropbox interferes with publishing in Subversion using TortoiseSVN (the global icons is inserted at top of lists of global icos with their own names instead of using standard Windows icons) I had to abandon the use and turn into OneDrive and now has accounts on both.

But is there some information in MM 21 that tells me on what account I have shared those files?