There is a known issue with the most recent version of Microsoft Word's 'Dark Mode' where this is also set up to have a black page background which causes page watermarks to fail to display properly. The watermark will appear to obstruct the text of the document, rather than appearing in a faded grey colour behind the text, as they are designed to be.
To fix this issue, you need to change the colour of the page background in your document by clicking View > Switch Modes. This will turn your page white and fix the readability issue.
Unfortunately until Microsoft fixes this bug, there is no means of resolving this whilst retaining the black page background. We are unable to turn the LPC Buddy logo off as this is part of the protection of our IP rights.