@Braquo it is really, really unhelpful when people post on here, don't get an answer within 72 hours, and then pay the PCN. We have no paid staff and have to post as and when time allows. You likely had until Thursday next week to pay the discount so you clearly jumped the gun.
That being said, because you have a formal notice of rejection you can still appeal notwithstanding the fact that you've paid, and the glaringly obvious argument is that the mandatory white arrow on the blue sign pointing to the right could be misinterpreted as applying to traffic coming out of the side road. Contorted with a confusing pair of signs, you were not given clear guidance by the highway authority and as such, the alleged contravention did not occur. If you win the appeal Camden will refund your payment.
The question for you is now whether you wish to pursue this or whether you're happy for Camden to simply pocket the money.
