Hi All. Well I have a problem i can't seem to resolve. I have a legit copy of QB and have been using it since I bought and paid for it in 2015. Yes I know that QB no longer support this version and they want more money from me to go online which I am not prepared to do. Now, this is the problem

I tried to save AN INVOICE AS A pdf  but it wouldn't so i used the QB hub tool to fix it. It didn't so i went to print preview and it didn't work so i went to printer and it did nothing. no printer was shown and no way to add one. QB was working fine yesterday and I have not installed anything since. When I went to the format tab the letter heading was there for the invoice but no preview, and when i went to the layout button the was nothing appearing on the screen. So i re-installed QB still nothing, I went to templates and although all of the templates were listed they were ALL blank, so i tried company files and can't find any I also used a back up i had from the begining of May still that didn't work everything on the invoice and sales sheet are empty.... HELP!!!! what has happened and is it fixable

Thanks