Promocode not working

[420blzfgt]

I recently activated Mount and Blade using a key I bought. However, when trying to enter that key into the promocode field when buying Bannerlord, it says the code is incorrect.

Could anyone help me please? I know this code is correct as I used it to redeem Mount and Blade 1.

Thanks

 

[420blzfgt]

I've also tried adding a non-steam game to steam but the steam store still gives me the option of buying Mount and Blade 1.

Shouldn't it see that I already own Mount and Blade 1 and therefore apply the discount to Bannerlord?

 

[420blzfgt]

bump

 

[420blzfgt]

bump