Working on local server, not working online

Who is your site’s host? I would recommend asking them if cURL requests to local URI’s is enabled or disabled.

I’m not getting any answer from the host. Isn’t there anything else I can do?

Here’s an article I found about cURL on WordPress plugins: https://www.htmlcenter.com/blog/please-stop-using-curl-in-wordpress-plugins/

SLB uses an even “safer” method than recommended in that article. It uses wp_safe_remote_get() which also uses the WP_Http class referred to in the article.

Who is your site’s host? If they are not responding to your support requests, I would suggest finding a host with better customer support.

Yes, I know, but it’s up to the client/friend to whom I’m designing the site :S
The host is called “SecureSignup” (??)
I found this, maybe it means that this is disabled for free accounts as mine:
https://185.27.134.26/index.php?/article/AA-00307

SLB does not use file_get_contents(), but if they are disabling core functionality like that in PHP, it’s very likely there will be other issues keeping WP and SLB from being fully functional.

WordPress has [minimum requirements] to function properly. If the host does not support these requirements then I would recommend referring to the official list of hosts that support WordPress to find an appropriate web host.

How about this one, do you happen to know if it works here?:
https://www.godaddy.com/hosting/wordpress-hosting.aspx?ci=76769&countryview=1 support.godaddy.com/help/article/285/do-you-support-curl

(I will try to find out but it’s not easy not being a client yet)

Sorry, I don’t have any specific experience with that host. I would suggest using a recommend host (link in previous post) if you’re unsure of a host’s WordPress support.

Sadly those hosts exceed the budget.

I tried with the new one but no luck: https://vinetauno.com/2014/06/sfdas/

But this time I have support so I may tackle the error.

Here’s the result of the Layout Data Test:

PHP: 5.4.16
Baseline
Layout URI: https://vinetauno.com/wp-content/plugins/simple-lightbox-test-layout/themes/baseline/layout.html

array(5) {
  ["headers"]=>
  array(4) {
    ["date"]=>
    string(29) "Fri, 20 Jun 2014 19:56:05 GMT"
    ["server"]=>
    string(6) "Apache"
    ["connection"]=>
    string(5) "close"
    ["content-type"]=>
    string(9) "text/html"
  }
  ["body"]=>
  string(1480) "

Ever feel you're in the wrong place
404 (Page Not Found) Error

    1) You entered an incorrect URL into your browser's address bar, or
    2) You haven't uploaded content.

    1) You entered or copied the URL incorrectly or
    2) The link you used to get here is faulty.
    (It's an excellent idea to let the link owner know.)

"
  ["response"]=>
  array(2) {
    ["code"]=>
    int(200)
    ["message"]=>
    string(2) "OK"
  }
  ["cookies"]=>
  array(0) {
  }
  ["filename"]=>
  NULL
}

Default (Light)
No layout
Default (Dark)
No layout

Thanks again!