Do images in plugins automatically load?

No, they don’t. There’s zero reason a browser would just download images from the server if they’re not used on the page. If that were a thing that could happen then all your uploaded files would download, and obviously that doesn’t happen.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)