Hi, bought the games a few days ago during the sale.

But I can neither find the games in the store or in my account 's game library now.....

I cannot find them while searching in the shop, but they're in my games list. A link to their pages is missing, though... (you know, when in your library you click on a game and you can then click on its title?).

I wanted to buy the 2 one, I could see all titles in shop 2 hours ago, now they're gone :O

Just got a reply from support, its a bug which is now fixed.

Btw, do GOG continue to support games with updates if its removed from store?

I'm not 100% sure, but I think no.

But I still can't find any of the "the guild" titles, so... is it fixed but still not updated or what? Do you have any further info?

See here. Try logging out, deleting cache & cookies, exiting the browser then logging back in. Otherwise, send in a ticket to support.