The Backer Build will stay in your library so long as you have the files on your computer. The files will eventually be removed from Epic so you won’t be able to download the backer build again at that point.
If you want to keep the backer build, I suggest making a back-up of it in another location
I have a question about the keys. I’ve bought the game via g2a.com in May, and I’ve received my key for the backer build for the EGS, and I’ve been using it for a long time now. But now as the full game is about to release, will my copy of the game on EGS be automatically replaced with the full game version? Or do I have to contact support for the key for the full game?
Hmm… They started to sell it when the Epic Games Preorders became available. It was the key for a platinium edition of the game. So I thought it would be the same as buying a preorder directly, which I unfortunately couldn’t do at the time, as Paypal doesn’t work well with Polish debit cards, and Paysafecard costs are enormous.
So basically I got scammed?
G2A isn’t a grey market place - they are an ecosystem which sells 2nd hand and stolen game keys.
Keys for backer beta and final release are separate. Reseller should have provided keys for both Backer Beta and release versions. Any issues should be taken with G2A, but whenever they take any responsibility for keys they sell I do not Know. They certainly dodge any responsibility when it comes to selling stolen keys.