Groups duplicating - make it stop?

I hope I’m using the right terminology here. I have multiple ‘instances’ of a group that I never (intentionally) created. One such example attached but I have more repeats… How do I turn this off?

Please check the inbox folder (see ~/Library/Application Support/DEVONthink 3/Inbox), is there anything inside it?

Yes- actually two folders with the names of the groups that keep multiplying. I have the inbox pinned in my finder and drop files into it often. Never occurred to me to check the inbox from the finder; I always work via global inbox inside the app (and I did read the manual!). I guess if I erase those the problem will stop?

Yes, this should fix it.

Thank you!