Spreadsheet 2.0.1 and Joomla 2.5.28

Hi everyone,

I installed the grid plugin to have the spreadsheet tool on my website but I only get a blank result.
I tested it on joomla 2.5.28 (latest version) without any additional plugins but the original ones activated.
I tried with many variations of the code
[[spreadsheet?&width=600px&height=250px&id=5&math=true]] given on the website’s instructions to use the plugin on joomla, I deactivated the editor so it wouldn’t add

markers to the code and still I get a blank page.
My webpage to see the page is fitsconnect.com/en/test
I don’t get how to do to make it work despite hours spent on the forum looking for answers on how to fix this…

thanks for the help!

Now I am checking with another website I have under joomla 3.4 and get the error:
Strict Standards: Only variables should be assigned by reference in /home/hdmontro/www/plttst/plugins/content/spreadsheet/spreadsheet.php on line 91

when using [[spreadsheet?&width=600px&height=400px&id=3&color_scheme=salad]] in the article.