@Dedzigs Hi!
I've contacted the support many times and they say a manual activation like in BFV is not possible.
The thing is, I had the skin for the MCS-880 without the code being in the system in Origin. Now it has disappeared and the support says that they only see the one for the PBX-45, which is valid now.
I contacted Logitech again and asked for a new code, but I don't know what the chances are because the campaign was a long time ago.
I'll wait for Logitech's reply. But it's a bug from Origin that the code isn't in the system.
The Screenshot only shows the Promo Offer 2 and not the one for the MCS-880 :{