In the cPanel account for nwircforum.com under Metrics > Errors, there are a few notices being recorded, however those don't appear to be the reason the site is posting weird.
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2021-02-01 14:24:48.337617 [NOTICE] [28772] [/home/ice/public_html/.htaccess:9] Unsupported ErrorDocument URL: default, must start with '/' or 'http'.
2021-02-01 14:24:48.337596 [NOTICE] [28772] [/home/ice/public_html/.htaccess:8] Unsupported ErrorDocument URL: default, must start with '/' or 'http'.
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We did enable debugging for the site inside of /src/config.php and an error is now showing when visiting http://nwircforum.com/css.php?css=p...32&k=4da7fed7a866e75f300abfc6772e79f8485cfdfe.
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An exception occurred: [Error] Class 'Less_Tree_Mixin_Definition' not found in src/vendor/oyejorge/less.php/lib/Less/Parser.php on line 2736
1. Less_Parser->NewObj5() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 1727
2. Less_Parser->parseMixinDefinition() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 858
3. Less_Parser->MatchFuncs() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 1009
4. Less_Parser->parsePrimary() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 674
5. Less_Parser->GetRules() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 621
6. Less_Parser->_parse() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 449
7. Less_Parser->parse() in src/XF/CssRenderer.php at line 412
8. XF\CssRenderer->renderToCss() in src/XF/CssRenderer.php at line 350
9. XF\CssRenderer->renderTemplate() in src/XF/CssRenderer.php at line 258
10. XF\CssRenderer->renderTemplates() in src/XF/CssRenderer.php at line 116
11. XF\CssRenderer->render() in src/XF/CssWriter.php at line 53
12. XF\CssWriter->run() in css.php at line 30
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We recommend double checking the installation procedure to make sure everything was done properly. This looks like a PHP class error that related to the logic of the site or perhaps missing files/custom plugins/themes.
As for the SSL, AutoSSL has been run for the site and there is now a SSL certificate on the domain that does not expire till May 2, 2021. This was done in the cPanel account under Security > SSL/TLS Status > Run AutoSSL.
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Use our fast SSL Checker will help you troubleshoot common SSL Certificate installation problems on your server including verifying that the correct certificate is installed, valid, and properly trusted.
I look forward to any suggestions you may have (including a fresh install if necessary). I have another Xenforo running on this hosting account quite well so I don't think it's the server/host.
If you can't log in to the ACP, download the zip archive from your customer account and upload all the files to the server again.
Then do a master data rebuild at: https://nwircforum.com/install/index.php?upgrade/
If that still doesn't work, submit a ticket and we can take a look.
I am able to log into the ACP. It's a little wonky but I ran the file-check and received the following (I didn't modify any files, strictly FTP'd them and ran the /install.pph):
File health check results
Re-run check
Check completed on 4,920 files. The files listed below have contents different from those originally downloaded.
If you have edited these files yourself, you may ignore this message, otherwise you should investigate further as this may be evidence of corrupted or altered files.
I worked for John Walton back in the day, he owned a few radio stations in Texas. I was a midnight to 6am jock for one of them while a high school senior.