[Dropped] Annoying advertisement pop-up

[sloriter]

Good day! I opened an OOW document this morning and an advertisement appeared on the upper left of it that I can't move or remove, so it prevents me from working on the opening paragraphs. I downloaded LibreOffice Writer and the identical thing happened, so it's not exclusive to OOW. (I don't see it in Chrome web browser or Thunderbird email client.)

I downloaded Malwarebytes and scanned the computer (Windows 10). I assume but don't know that Microsoft's Defender software is also running. Neither finds anything to quarantine.

How can I get rid of this nasty?

Thanks -- Dan

[RoryOF]

There are no advertisements in a genuine OpenOffice; we need to see at least a screenshot, and preferably a copy of your .odt file.

[sloriter]

Okay, I'll try, but I''m sure the advert has nothing to do with the OOW or LOW software. Whatever it is, it apparently has the ability to read the text. I was writing about 18th century clothing and the ad was for fashion clothing. When I opened the doc in LOW, it changed to something more generic, can't remember what. It affects only those two programs. In OOW it freezes the document. In LOW it can't be moved or removed, but I can screen down to continue work on anything not obscured by the advert.

[Hagar Delest]

Can you upload a screenshot (see How to attach a document here)?

[floris v]

Is part of your document copied from the Internet and could that copy contain an advertisement?