Ohh i see why, this is with-www and non-www URL confusion issue.
Look at the 1st error. It tries to open the file through non-www and the others have with-www but the requests return with "not allowed access" error message.
Open this PHP file:
JOOMLA_ROOT/configuration.php
and make sure
$live_site line is empty, like this:
By the way, i strongly believe yours is: public $live_site = 'joyeriadebrasil.com/tienda';
Don't enter the live site URL there manually. It will cause the non-www or with-www confusions with Safari and Chrome browsers, because JSON can be made only internally (within the same domain). And Safari and Chrome pretend
www.yourdomain.com and
yourdomain.com as separate domains. (it is all about security) Firefox doesn't care about it, on the other hand ;)
(the "add to cart" process is handled by JSON as you might guess)
Joomla is smart enough to decide what your live site is. So, no need to define live_site manually.
If you like PureMart and satisfied with the support you have received, please "write a review" on:
www.flexiblewebdesign.com/Virtuemart-2-Templates/PureMart
Write couple of sentences to share your experience with the support team.
Just 2-3 sentences would be enough ;) It might sound simple to you, but it is extremely important. Potential customers care about product reviews very much.
Thanks in advance!
Regards,
Support