in the sentence he planned to go to the local library it says he is younger than 8 years old but when you type up statistics for Harry you say he's 9 years old I'm confused

I like the concept of what you have here. Unfortunately it is pretty difficult to read. You constantly change the pronouns and it seems as though English is not your first language because some sentences make absolutely no sense.

it's all great but what with potters, hogwart, vlodemort and dumbledore?

You keep switching gender-specific pronouns. he/she, him/her, etc.
Harry is a male:
He, him, his, himself.
This applies to all male characters.
Female characters should use:
She, her, hers, herself.
For gender-neutral beings:
it, itself.
For groups:
They, them, themselves.

You keep calling Harry brunette. He's got Black Hair not brown.

Good start.
The battle which was awesome seemed to come out of nowhere at first but it was a much better way for Harry to learn about Instant Dungeons and Gaia then just reading it in the description of the ability.
There were some grammar and incorrect word uses but nothing too serious and I know English isn't your native language. One thing I did notice story-wise, at one point you had the game show, Harry, as 9 but just a couple paragraphs later you said he couldn't go to the library until he was 8. Did you mean 18?

like to read more.

World of Warcraft... Nice.

Did Harry just clear out the Undercity? lol

Your plot feels like its all over the place changing course all the time and to the point where this is not a harry potter crossover but a gamer story with a guy called harry potter

Try it won't get everything but it helps catch a lot

Ok two things that are really bugging me,

1) harry has black hair not brown (brunet)

2) harry is white and dark and is proven throw D&A as he has green eyes

praying you don't do the grail war

is this before or after philosophers stone? did harry meet hagrid? is harry A rank?

I always hate when stupid main characters decide to tell someone about their gamer abilities.

Shiping his sister Rose as his first romantic interest because why not he had slaves he killed why not cross that little line that this time wont hurt anyone and romance his sis :P