Sadly, I have to also report not receiving the email within 10 working days of activating FTTP on 11th March, for claiming the Reward Card. Nothing in my spam box.
(fwiw, I appear to have two Plusnet broadband accounts. The 'former' broadband account (to 2023) which still seems to exist may be linked to this forum user account. The new broadband account has a very similar broadband username but with 2025 tagged on)
Plusnet (ADSL, FTTC) 2008-2023. BT (FTTP) 2023-25. Plusnet (FTTP) 2025-current