Finally got it sorted yesterday, and order is in testing.
Advice for anyone else that may have this problem: quote your finance agreement number when you first speak to someone and accounts will be able to match it to your order.
Gave them a call this morning...
Was told that they didn't know what the problem was and that they'd have to get back to me. Apparently they've only been using humm for a few weeks(?).
Hopefully I hear back from them soon. I don't like they idea of having a finance agreement for an order that...
I've had the same same issue, redirected after completing the agreement with Humm to a "something went wrong" page.
I've emailed PCS about it, then saw this post, so hopefully it sorts itself out like the OP's case.
