Problems with LibreOffice...

I recently added LibreOffice to my new computer. I’ve put my documents, downloads, and photos onto the new Dell computer (Windows 10). I used a thumb drive to accomplish this. The program works well, EXCEPT that if I create a new document or add to an old one, it won’t let me. It states that I only have the right to read it only. Then it locks up and I have to start all over. How can I remedy this? Please me know, this is important.

I used only my first name on the old computer and full name on the new one. Could that have anything to do with it?

Check the permissions on your thumb drive and add full access to the user account of your new computer, if this problem appears with any application.