Add (N) to X (Ended - Solution added)

Hello friends! I recently discovered a new group. Quite an interesting performance. But perhaps there is more behind this.
Here, take a look.

Hint 1: If you are looking for the key, you should know 2 things. First one is that you actually need two keys. Second one is that everyone (who knows about puzzle) can see those keys.

Hint 2: If you have a message, but don't know what to do with it, just ask that man you see. He managed to solve it once

Hint 3: If you see nothing inside, maybe you should open it like a box?

Solution: There is a symbols in youtube link after 2nd "=" - qEKaF7Ze. Leads you here.

2. Image is clickable and leads you here.
3. You'll find "Look inside!.jpg" file which actually a .zip archive. You should unpack it.
4. There are two files inside. "_" without extension - .txt file actually and 1.jpg which actually a .zip archive again. You should unpack it again.
5. You'll find another two files again. There will be "1" without extension - .txt file and 2.jpg. You should unzip all .jpg files. it's all archives.
6. Collect all files without extension - 1, 2, 3, 4, 5 and 6. There is a text chunks inside. Combine it into one string.and you/ll get this: "GDGDADGDFDAGFAFDADDAVDDXVFAAAA".
7. To understand what does it mean you should ask a man from the picture. So, after image searching you'll know that he is Georges Painvin known as the cryptanalyst who broke the ADFGX/ADFGVX cipher used by the Germans during the First World War.
8. Now, when you know what cypher was used you'll need two keys. You can find them where everyone, who knows about puzzle existing(about hidden symbols in youtube link) can see it - on this page. Here they are: "Default option".
9. There are a lot of different online tools for decrypting this cypher. But, for my opinion, the most convenuient is this one. You can use any other though.
10. So, if you add first word into Polybius square you'll get this alphabet: "DEFAULTBCGHIJKMNOPQRSVWXYZ0123456789".
11. Using the second key/word - "option" you can actually crack it and get: "UNBREAKABLECODE". It is the message you are searching for. Just enter it here.
12. You'll get "rRLQV" as answer. It is id of the giveaway on SteamGifts.

Games from this puzzle train: 1. Morkredd -> 2. Out of Space -> 3. Levelhead -> 4. Remothered: Broken Porcelain -> 5. Retimed.

Thanks for participating and congratulations for all solvers. It was my first puzzle here, but not the last. Feel free to ask your questions.
P.S. Привет моим русскоговорящим друзьям, а так же пираньям из группы "Халява".