Problem with w3c validator

Hi guys, sorry for my bad English
I used this module on my website but when I run the control on validator.w3.org/ I have problems :
there aren't ALT IMAGE
"An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images."

but I have insert the text (see the attachment)

Help me please!!!!

Dear DoubleFederica,
Thanks for contacting us and choosing our product!
About your problem with news wall (i see only news wall on your site) we have just update options columns at back-end and fix some eror!
I checked validate html on your site and you can fix it by followings steps:
Step 1: Go to path {root}/modules/mod_jux_news_wall/tmpl then open file default.php if you use module for joomla or open file default.php in default folder if you use K2
Step 2: Go to start K2 Item layout and change code:
k2Container <?php echo $module->id; ?> to k2Container<?php echo $module->id; ?> (remove space after k2Container)
Step 3: Find html image code same as:
<img src="<?php echo Juri::Base(). "/images".$image ?>"> and add alt as below
<img src="<?php echo Juri::Base(). "/images".$image ?>" alt="<?php echo $item->title;?>">
Hope this help!

Thank you so much!!!!
I will try immediately !!

I have modified the initial post removing the link to the website at the request of my boss

Hi, Let's try and feedback!
Many thanks!

SOLVEDDDDDDDDDDDDDDDDDDDDDDDDD THANKSSSSSSSSSSSSSSSSSSSSSSS *_______________________*

Hi Federica,
Thanks for your feedback!
I'm very happy when you can solve this problem. If you really like our product please write a review and vote 100 point for us at:
extensions.joomla.org/extension/jux-news-wall
It will help us very much to develop our product! Many thanks!

immediately!!!

Dear Double Federica,
Many thanks for your review!
If you have any problem with our product please feel free to contact us at anytime!

*******
Regards,
--GD--