Can't reshape weapons crafted the last weeks before Final Shape

[fathom turtle]

I crafted a Lethophobia, among other things while all lightfall seasons were free during the last weeks before the Final Shape, but since I technically don't own the season pass, I can't reshape

Does anyone know whether it's possible to purchase the season pass after or if there's any other way to reshape those weapons?

[umbral elm]

buy the respective dlc it came from