If everything was working well and suddenly it not then one possibility is that you have issue with your translation provider (others are: some configuration was changed, new mod added, some software updated).
There is very easy way to check out do you have issue with Google api v1 or it is somewhere else. To check it please just create new php file with this content:
This file you can find in vBET pack in do-not-upload/tools/googletest.php
PHP Code:
<?php
echo "Starting translation test for Google API v1<br/>\n";
$connection = curl_init();
curl_setopt($connection, CURLOPT_URL, 'http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&format=html&langpair=pl|en&q=witaj');
curl_setopt($connection, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)');
//curl_setopt($connection, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($connection, CURLOPT_RETURNTRANSFER, 1);
$time = microtime(true) * 1000;
$result = curl_exec($connection);
$time = microtime(true) * 1000 - $time;
echo 'Test result: '.$result."<br/>\n";
echo 'Test error: '.curl_error($connection)."<br/>\n";
curl_close($connection);
echo 'Connection time (ms): '.$time;
?>
In case you use google api v2 use this code - also this file will be included in our next release:
PHP Code:
<?php
require_once('./global.php');
echo "Starting translation test for Google API v2<br/>\n";
$connection = curl_init();
curl_setopt($connection, CURLOPT_URL, 'https://www.googleapis.com/language/translate/v2?key='.$vbulletin->options['vbenterprisetranslator_googleapikeyv2'].'&format=html&q=witaj&target=en');
curl_setopt($connection, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)');
//curl_setopt($connection, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($connection, CURLOPT_RETURNTRANSFER, 1);
$time = microtime(true) * 1000;
$result = curl_exec($connection);
$time = microtime(true) * 1000 - $time;
echo 'Test result: '.$result."<br/>\n";
echo 'Test error: '.curl_error($connection)."<br/>\n";
curl_close($connection);
echo 'Connection time (ms): '.$time;
?>
Upload it to your server (your forum root) and put URL to it in your browser. If everything is ok you will get answer:
Code:
Starting transaltion test
Test result: {"responseData": {"translatedText":"Welcome"}, "responseDetails": null, "responseStatus": 200}
Test error:
As you see error have no value and result have status 200. This means: everything is ok.
If you where blocked response from Google will looks like that:
Code:
{"responseData": null, "responseDetails": "Suspected Terms of Service Abuse, please contact ajaxapis-support@google.com.", "responseStatus": 403}
If you where blocked - just write to Google as the message says. It will allow to find our the reason, maybe it is some mistake, maybe you will have change something to fit better to Google's TOS. Anyway Google easy gives access back when the issue is solved 
If you have network problem then result will be empty and error will tell you what is going on (i.e.: Couldn't resolve host 'ajax.googleapis.com'). Note in such case it can be a while before you will see output (until connection is timed up).
Network problem example:
Code:
Starting translation test
Test result:
Test error: Failed to connect to 74.125.95.95: Network is unreachable
Connection time (ms): 70.96484375
What should you do?
firstly: check that the firewall does not block access to google.
secondly: you should contact with your host provider and ask him about problem with connection
If you see only "Starting translation test" or nothing at all then most probably you do not have installed CURL module in your PHP.
If you are using microsoft API, create new .php file and put this code inside it:
PHP Code:
<?php
require_once('./global.php');
echo "Starting translation test MS<br/>\n";
$connection = curl_init();
curl_setopt($connection, CURLOPT_URL, 'http://api.microsofttranslator.com/V2/Ajax.svc/Translate?appId='.$vbulletin->options['vbenterprisetranslator_microsoftappid'].'&from=pl&to=en&options={%22ContentType%22:%22text/html%22}&text=witaj');
curl_setopt($connection, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)');
//curl_setopt($connection, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($connection, CURLOPT_RETURNTRANSFER, 1);
$time = microtime(true) * 1000;
$result = curl_exec($connection);
$time = microtime(true) * 1000 - $time;
echo 'Test result: '.$result."<br/>\n";
echo 'Test error: '.curl_error($connection)."<br/>\n";
curl_close($connection);
echo 'Connection time (ms): '.$time;
?>
Than upload it on your server, in your root forum folder, and put that link into your browser.
You should see something like this:
PHP Code:
Starting translation test
Test result: "Hello"
Test error:
Connection time (ms): 272.083984375
If something goes wrong you will get an error, i.e. if you put wrong Microsoft ID:
PHP Code:
Starting translation test
Test result: "ArgumentException: Invalid appId Parameter name: appId xxx"
Test error:
Connection time (ms): 416.24194335938
Than you should paste your Microsoft id carefully one more time
You can also get this error message(with different ID value), which means you are blocked by microsoft:
PHP Code:
Starting translation test MS
Test result: "InvalidOperationException: : ID=3641.V2_Json.Translate.365033CA"
Test error:
Connection time (ms): 237.756103516
In this case you will have to send mail to microsoft support: mtcont@microsoft.com
including this content:
-your microsoft translator API id
-full error code, i.e.: InvalidOperationException: : ID=3641.V2_Json.Translate.365033CA
-describe the problem, - when it appears, etc.
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