Copy Paste not working as of today

I use Collavbora on a Samsung Tablet S9 Android. Today when I did what I have done for months without issues (Ctrl A followed by Crtl C then Ctrl v in an external app) I get this message instead To paste outside Collabora Office, please first click the ‘download’ buttonTo paste outside Collabora Office, please first click the ‘download’ button

Tyhe message tells me that the download button is actually Ctrl C. I click it. The message ‘copied to clipboard’ floats into view as usual.
Then, when I do ctrl C it copies this message, not the text in the document.

I deleted Collabora, restarted the tablet, and reinstalled twice, to no effect.

What might be the issue and how to resolve? I use Collabora daily.

Thanks for any insight into this.