This is one thing that has me wondering about SMF. It is apparently a known issue but in the latest version and new install nothing looked right because it was using http://127.0.0.1 to find everything! How on earth would it ever do this or think it is normal?
Excerpt of crazy html code it produces that causes the issue:
<link rel="stylesheet" type="text/css" href="http://127.0.0.1/smf/Themes/default/css/index.css?fin20" />
<script type="text/javascript" src="http://127.0.0.1/smf/Themes/default/scripts/script.js?fin20"></script>
<script type="text/javascript" src="http://127.0.0.1/smf/Themes/default/scripts/theme.js?fin20"></script>
<img id="upshrink" src="http://127.0.0.1/smf/Themes/default/images/upshrink.png" alt="*" title="Shrink or expand the header." style="display: none;" />
<img id="smflogo" src="http://127.0.0.1/smf/Themes/default/images/smflogo.png" alt="Simple Machines Forum" title="Simple Machines Forum" />
</div>
To repair it you need to get a tool from the SMF site: https://wiki.simplemachines.org/smf/Repair_settings.php#Download_the_Repair_Settings_Tool
Get the tool run it and you'll see some output like this:
Almost always aside from MySQL DB you should change 127.0.0.1 to the domain name of your server.
URLs
These are the paths and URLs to your SMF installation, and can cause big problems when they are wrong. Sorry, there are a lot of them.
Forum URL:
Recommended value: "https://forums.domain.com".
Forum Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs".
Sources Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs/Sources".
Attachment Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs/attachments".
Avatar URL:
Recommended value: "https://forums.domain.com/avatars".
Avatar Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs/avatars".
Custom Avatar URL:
Value not found!
Custom Avatar Directory:
Value not found!
Smileys URL:
Recommended value: "https://forums.domain.com/Smileys".
Smileys Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs/Smileys".
Paths & URLs For Themes
These are the paths and URLs to your SMF themes.
SMF Default Theme - Curve URL:
Recommended value: "https://forums.domain.com/Themes/default".
SMF Default Theme - Curve Images URL:
Recommended value: "https://forums.domain.com/Themes/default/images".
SMF Default Theme - Curve Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs/Themes/default".
Core Theme URL:
Recommended value: "https://forums.domain.com/Themes/core".
Core Theme Images URL:
Recommended value: "https://forums.domain.com/Themes/core/images".
Core Theme Directory:
Recommended value: "/var/www/vhosts/domain.com/httpdocs/Themes/core".
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