HumbleBundle to Paizo To Fantasy Grounds content

[plober]

Bottom line up: Can I redeem old humblebundle redemption codes?

Long version: I've been playing Pathfinder since the beginning of the first edition and used to buy the digital content through Humblebundle promotions (as well of some of the physical books & stuff by non relevant means). Some of the codes were redeemed because they had a book I mean to peruse, some were not.
Recently our party migrated from Roll20 to Fantasy Grounds Unity and suddenly the modules I bought years ago were relevant, it was content I paid for I could finally use. However, I have discovered that some of the codes were not redeemed in time and there's content I paid for that is not accessible to me.
I would like to know if there's a way to get that content (which I paid at HumbleBundle store) loaded in my Paizo-linked Fantasy Grounds account. I assume I should provide proof of my claim of paying for the digital content and such.

Obviously the codes are not working when I enter them at https://paizo.com/paizo/account/redemptions

I am fully aware Paizo has no obligation to provide that content; some of the codes are 3 years old and I'm sure somewhere was mentioned that they had an expiration date.
Additional info: Recently Argentina went through our very particular and cyclic economic meldowns wich renders international payments laughably expensive.

[Joan H.]

Hi Plober,

Do you know which specific bundle your codes were from? Our Humble Bundle keys typically have an expiration of 2 years from the date of issue but I can see if I can check the original details of the bundle to see if there might be any additional information!

[plober]

Hello Joan, thanks for your help!

Yes, I know which codes. The specific bundle I bought is the "HUMBLE EXTRA LIFE BUNDLE 2017", I got the 15 $ tier precisely during Nov 2, 2017.

I never redeemed any of those, although right now the relevants are the ones belonging to the 2nd tier. I'm pretty sure eventually I may need the las one. And, IIRC, I have already redeemed the ones at the 1$ tier.

[plober]

Let me rephrase that:
I never redeemed any of those, although right now the relevants are the ones belonging to the 2nd tier. I'm pretty sure eventually I may need the las one.
I think I arleady have most of the books from the 1$ tier.