hi. the 20 % of will be also after release date thx

In Review, i'm waiting !!!

No difference at all, except the download speed is a lot faster from us :)

What's the difference if I download all 31 files with your gameplanet downloader or if I download it through official rockstar launcher?

I almost completely downloaded all your 31 files and I really hope there will be no problem.

This is what I've found for launcher crashes and what you can try, you should read it to get a better understanding, and page 2 harrymanback133 has some useful tips but I've sumarised a few below:
https://support.rockstargames.com/hc/communities/public/questions/203155778-GTA-V-for-PC-error-Launcher-has-stopped-working

• Change your Windows user name if you have special charaters or characters outside of the English language. Or create a new Windows local account.
• Download .NET framework - http://www.microsoft.com/en-gb/download/details.aspx?id=17851
• Make a clean install of graphics card driver
• Reinstall Windows, and download / install the game before doing any Windows updates

@Lithium- apologies for the confusion.
I can log into R* social club online fine.
It is the GTA V launcher that repeatedly crashes- the problem info states "Faulting module name: socialclub.dll, version: 1.1.5.5"

Just bought it, paid through my bank (Swedbank, Latvia) and the serial key was immediately there in my gamesplanet account. So I started the game download 1 minute after purchase. Thank you, Gamesplanet UK!