Issue with Get Variable on Success attribute

Hey everyone

i’m trying to dynamically generate shortcodes based on different circumstances

this is the code for one button, there are four.

basically i have a custom pricing table, and these buttons are generated based on prices users enter in the backend, so the price variable changes,

What important is that on the success page, i need to be able to grab the “package” attribute via GET to run different procedures

my problem is that i am not able to grab that appended get variable.. it is not being processed correctly..
please see a var_dump of the $_get below..

array (size=9)
  's2member_paypal_return' => string '1' (length=1)
  's2member_paypal_return_tra' => string 'fnIyOlpuRDZJV0dtYm1ERnN3Nmd3ZU5XOXo3MFMyZFduREZGOmZkMWM1NzM4NTczNWFlZWRiZTJjN2JjNTY3NjkzYjUwfDbB0i1RdxkKU2NzXkDvH_9YLcLk4wxTkmVhDJNxCHjtNu2-xXuLuduYKPuSsm9_8p1YV_oKEz_XNn3pnxJ8TZp0exLG0yiBwhTFCmrWc4MqZ4vIoWFVETDZ1BzRwGLpp1wvV-X3r5i6oY-dlVzwyq4R5JKjAIjG4GbF2N_jKMitF38EQ8XdBHSZznpXNCELPD7yXzjGIZKkP0ej0HEFUCC3Rp4irz8aSPES4ticaQrLPPjhEsK2n3gO6stQg1D_Nhw2QtoSCNflJwiadzLVccqxJWN6H60SH77BqakLnnDyeyF5axhm7FdzuDCCX2clfUMacISggjeE95Weln5vNum2I4WW03QhDhVPzk_otEp5x7PgFWWBlNYHI6LmnGdx5g' (length=478)
  's2member_paypal_return_success' => string 'http://localhost/wordpress/mindframe/?s2member_paypal_return=1&package=platinum' (length=79)
  'tx' => string '7RD50944JN433744F' (length=17)
  'st' => string 'Completed' (length=9)
  'amt' => string '7.00' (length=4)
  'cc' => string 'USD' (length=3)
  'cm' => string 'localhost' (length=9)
  'item_number' => string '4::1 Y' (length=6)

i’m not sure what has changed, i havn’t tickered too much in the backened, but when i started building the site.. the success page, would show one variable ‘s2member_paypal_return’ => string ‘1’ (length=1) and my custom variable ‘package’ => platinum.

Also the template si different.. its now asking me to log back in..

does anyone have any idea why i’m not able to do this?

even when i generate a shortcode from the backend no and simply just add the normal return url as a success attribute as shown in the exmaples.. its still doing this.. i’ve also turned off payment review for my sandbox account..

This is going over sandbox from my localhost.. and localhost is enabled in the backened

i’d be very grateful for any help

Thanks