either you can take what you have to any store that sells/sold them as long as you have most of the parts
or you call the company (google "aqua dot recall") and they will send you a box/envelope to send it back and they will send you a replacement or a toy voucher good at any retailler, you usually don't have to have any of the packaging
I would think (HOPE) the replacement beads would be fine
I saw that Target has this in their BF ad...
And they are recalled in the US