Clipboard/clipboard history doesn't work....?

It doesn't work in that I cannot paste anything, text, photos etc. from the Win logo+V. After copying text I get the history in Win logo + V but after left clicking on that to select an item it will not paste anywhere, particularly text from it to Notepad for example.  It will only paste a current copy, as usual but not an historic copy.

I do get sometimes the IMAP error as a destination from using Greenshot app for screenshots when trying to paste them.  Is my destination setting wrong but how to correct that? I don't know where the screenshots are going to. 

I have the complete user guide of Greenshot but it doesn't say where those shots reside.

Any help, thanks.

Win 10 Pro

I've been wasting my time trying to paste in my screenshots to Notepad (as info says paste into anywhere) - it seems that won't work as I have now successfully pasted into Wordpad and in an email!

Perhaps problem solved.