Module doesn't work in Joomla! 2.5.28

Hi,
I payed for this modules but it doesn't work. Every time that I Try to
publisher I saw Error 500.

I have Joomla! 2.5.28

Can you help me?

Dear squaladesign.
Thank you for using product our.
1. I'm sorry for your problem. Current we don't support Joomla 2.5 for all product and we had spoken in my document. Please update Joomla 3.X. If it still have the problem.Please give me link your site and your account of the administrator via private message.I will check it for you.
2. If you still use Joomla 2.5, we can give for you version old.
NOTE: when you update Joomla 3.X, you can update version new when we update the product.
Hope you can sympathy for us.

I cannot update joomla, in this case, can I have my money back?
Please

Dear squaladesign.
Thank your feedback again,
Please give me link your site and your account of the administrator via private message.
I will check it again. If still don't work with Joomla 2.5. We will return money for you.

Can you send me via email your old version?

Dear squaladesign.
I send JUX Mega menu version old for you via email. Please check it and feedback to me again.
Thanks