<input type="hidden" name="send_to_bp_usernames" id="send-to-bp-usernames" value="" class="">
sorry for the multiple entries. just wanted to highlight that this was the ‘error’. the value and class doesnt show the vendor shop username.
it was supposed to show something like <input type="hidden" name="send_to_usernames" id="send-to-usernames" value="brandon" class="brandon">