It is a device. I believe deleting or renaming a folder causes it to create a new one with a different name because it cannot find the old one. I have several folders connected for not good reasons I won't bore you with, and only one account. Same effect, different reason. https://forums.adobe.com/people/Jim+Wilde wrote I expect that long alphanumeric parent folder name is the way that Adobe uses to connect the downloaded originals to the correct Adobe ID. It is entirely possible that multiple users (each with their own Adobe subscription account) could use the same desktop system. In order, therefore, to keep correct separation of the downloaded originals each separate ID will have a uniquely-named parent folder. I have two separate accounts, and thus I have two separate downloaded originals parent folders. The same unique names will be used if I run the LRdesktop app on a second system. I wouldn't bother trying to rename that folder to something more user-friendly (it's not designed to be user-friendly), because if you do the app will recreate the parent folder with a new set of downloaded originals below.
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