URGENT: Unable to make the Conditional Plugin work after activation ;(

I am unable to make it work.

It isn't working on localhost nor on my production server online ;(

The MB Tabs plugin, that I have purchased previously, is working nice on both localhost and online on the production server.

I have followed the docs and after activation of the plugin (I have slelected the zip file when selecting a plugin fiel and then click on activate, everything went well and now the plugin MB Conditional Logic is activated and the background is blue.

Version of Meta Box is:
4.5.7

Version of MB Conditional Logic:
1.0.7

WordPress version:
4.3.1

After I have tried all combinations from the documentation including hidden, vissible, I tried to set same string for opion and value to reduce the error possibility like:

array(
                    'name'  => 'Test me now:',
                    'id' => "test_me_now",
                    'type' => 'select',
                    'options'     => array(
                        'abc' => 'abc',
                        'def' => 'def',
                        'ghi' => 'ghi'
                    )
                ),

and then checking it for the field I want to show/hide based on the option selected:

array(
                    'name'  => 'Test price:',
                    'id' => "my_test_price",
                    'type' => 'text',
                    'visible' => array( 'test_me_now', '=', 'ghi' )
                ),

But nothing! I can select anything, everything is shown, nothing is hidden.

I have tried hidden and != as an operator but nothing works ;(

I have tried other fields and when nothing wokred I tried your example from docs:

array(
                    'id'    => 'brand',
                    'name'  => 'Brand',
                    'desc'  => 'Pick Your Favourite Brand',
                    'type'  => 'select',
                    'options' => array(
                        'Apple'         => 'Apple',
                        'Google'        => 'Google',
                        'Microsoft'     => 'Microsoft'
                    )
                ),
                array(
                    'id'    => 'apple_products',
                    'name'  => 'Which Apple product that you love?',
                    'type'  => 'radio',
                    'options' => array(
                        'iPhone'    => 'iPhone',
                        'iPad'      => 'iPad',
                        'Macbook'   => 'Macbook',
                        'iWatch'    => 'iWatch'
                    ),
                    // Conditional Logic can applied to fields
                    // In this example: Show this field by default, 
                    // hide it when user selected different value than 'Apple' on brand select field
                    'hidden' => array( 'brand', '!=', 'Apple' )
                )

However, nothing happened. The radio buttons are shown all the time from the beginning. I can select Apple, Google, Microsoft but nothing is happening ;(

I don't get it, because the tabs plugin is working. Why is the conditional logic not working?

Even the exact doc example is not working ;(

Is there any way how can I turn it on? Thank you for your help.

Btw. I have turned to show all php errors in my plugin with:

error_reporting(E_ALL);

and also

I do not see any errors or warnings for JS or CSS in my browser debugger.