I cannot read my older documents, they are very faint gray.
I can type new text in them and can read it.
Do I need to make another donation?
It seems a technical problem on your computer. Can you upload one of the “unreadable” documents here? What type of the textual documents are you using?
Please provide operating system and version number, and also the version of LibreOffice.
What is the file format of your old documents that are displaying the strange behaviour you describe? ?
Are they .doc(x) files? If you click in the header do you see selection handles for a white box covering the text? If so, you could delete it or right click it and select Wrap > In background.
If you cannot select it, open Navigator in the sidebar and look for Drawing objects or images that show handles when double-clicked in Navigator.
If you click Help > Restart in safe mode > Continue in safe mode, open the same problematic documents, can you see the text in black or grey?