| The old site still shows | An old index.php or .htaccess is still in the website folder: move it into old-site. Then clear the host's cache and check in a private window. |
| "Index of /" or a list of files | index.html is one folder too deep. Open the subfolder, select everything, Move it up one level. |
| A blank page or "403 Forbidden" | Same: index.html isn't directly in the website folder. |
| Pages work but no pictures or styling | The css or images folder didn't upload, or landed elsewhere. Upload again. |
| "Not secure" in the address bar | Turn on the host's free SSL. It can take a few hours after the files go up. |
| Your host's placeholder page ("Coming soon", "All set to go") | Delete the placeholder file (often default.php or index.php). |