screenshot image issue after upgrading MS Word 2018 to MacBook Pro in late January 2024

Ever since MS Word or Office 2018 automatically upgraded to the latest update in late January 2024, I've ben having issues with it. Although I can still copy and paste text from one Word file to another, when I try to copy and paste text on a website, it only copy and pastes as a screenshot image of the text instead of the text itself in the space. If I have multiple MS Word files open at the same time, the SAVE button option  does not show when I click on the SAVE link under File. Only the CANCEL option shows instead of also SAVE. I usually have to restart my laptop for the SAVE option to show up again. However, it still only copies and pastes as a screenshot image even after I restart my laptop. Is there a way to fix this or restore MS Word 2018 to default. If I restore it to default, there may be lots of missing updates that are needed.