How long does Huel Greens powder last after opening?

I don’t use Huel Greens every day, so I’ve been working through my current bag for about 4 months. It’s well within the sell-by date, but the one I’ve just made tastes disgusting, and I wondered if there’s a maximum time after opening in which the Greens should be consumed?

60 days from what I remember

Thank you.

Once opened, Huel Daily Greens should be consumed within 60 days and stored sealed in a cool, dry environment away from direct sunlight.