Stickers have been out of stock for some time.
For reasons I do not understand, although we believe that there is a message which is supposed to tell you this if you try to order them, it does not always do so.
Also, many of the emails that are sent out seem to end up in Spam folders, so check that to make sure that Bertie has not communicated with you.
And then, send an email to bertie@abarthownersclub.com quoting your order number, and I am sure he will sort it out for you.