SSL (HTTPS) Issues
Please see the troubleshooting page about this here.
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Incorrect Domain Name(s) set
Login as root on the SynergyCP web server and then run this command:
/scp/bin/scp-exec php_s php artisan setting:update --name=api_url --value="http://<YOUR_API_DOMAIN>"
Make sure to change "<YOUR_API_DOMAIN>" to the correct domain name. If you have HTTPS enabled, you'll need to change "http" to "https". Repeat the same command but replace the name field ("api_url") with "admin_url" and then do the same for "client_url". Make sure to update the value to the relevant domain name each time.
Login as root on the SynergyCP web server and then:
/scp/bin/scp-exec php_s php artisan tinker
Once the shell above has opened, paste this in:
$acl = App\Setting\Setting::query()->where('name', 'admin_acls')->first();
$acl->value = '';
/scp/bin/scp-exec php_s php artisan license:refresh