I cant download the patch 1.31 for the witcher 3 due to error: NOT AUTHORIZED, I´ve read that the error its solved purchasing the free DLC program, the thing is, that I already bought it (before the error) so now, I cant update nor paly Hearts of stone due to bugs that need verify/repair, option that need to update the game... so what can I do?

Where did you buy the game and/or expansion/s? It sounds like you have bought a stolen key that won't authorise because GOG have revoked it.

I bought a physical game... and the expansions from online shop G2A

You need to take this up with G2A. They have a very bad track record of selling stolen keys. Do what you can to get your money back or a valid key, and avoid them like the plague in future.

You are actually right, the code I bought was buyed with a stolen card so it was cancelled, G2A is a piece of s&%$ never buying from them again...