Hi, I am interested in this module and I need to know if there is support for prestashop 1.5.5.0 version.
yes, we have separated version of the module for PrestaShop 1.5x, please purchase current version and tell us your order number we will send you in email.
Also, if it is possible to offer the recurrent payments only in selected products, not all of them.
yes, there is recurring payment system, by default it only allows user to choose and it will apply to all products.
if you want to use recurring payment for some products only, you may combine with Agile Membership module,
Agile Paypal express checkout module is integrated with agile membership module so it show Subscription button on product page.
Is there an spanish language support?
Yes, most of the text has been translated into Spanish already, but you may need to adjust the translation.