How to add copyright information to the bottom of each article

I found two problems：

1. How can I remove the article author link and display only the article author's name

2. Why is the title of the last article in the article navigation the same as the title of the latest article? The title of the last article should be displayed. What is wrong with this setting? Other articles will not appear. Only the latest article has this situation

Hi Ryan,

Can you open new topics for each of these new "problems"?

Hope to hear from you soon.