EPUB validation, specifications needed - epub

Hi Please help to solve my problem. I have a problem with "Pagina EPUB-Checker" when I have try to validate my epub file the checker was not showing error details only its showing "epubcheck finished with error or warnings". Please see the screen shot and help me to fix this problem. The same file working in other online validation. but not in this tool.
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Under #shadow-root I saw unwanted Url Links

I was trying to solve a problem in my site about undefined error in notification area meanwhile in google developers tool I figured out something new to me. While I read documents about Shadow-root a little and saw many documents telling me how a wonderful technology is that.Still no clue what is shadow-root :D
But I saw some links under shadow-root style and I though I got hacked somehow please find attached image and please tell me what was about and what can I do .
Thanks in advance.
shadow-root unwanted links
Do you use a kind of blocker extension in your web browser?
This is a CSS rule to exclude / block all the listed sites or trackers.

App store submission error related to launch Images

I know we have lots of post for this type of error,But nothing will work for me,I have uploaded other 4 apps successfully without any issue but one app I am facing issue (attached Images),Any one have appropriate step for resolve this error. Kind for your help and positive response.After lots of try I am posting this question sorry guys if you have the info that will be helpful for me.
your launch image must be 1136*640 and 960*640
image default#2x.png and default.png use in this
i think help it for you

can someone help me about these errors

enter image description here
I am getting some errors as shown in the screenshot, can someone help me solve the errors.please let me know if any further information regarding this issue is required shall post them in detail.
It looks like it can't find the file you're specifying. I'm not sure what you're trying to do, but perhaps your target file isn't in the correct directory. Try finding it in the Explorer first then copy and paste the address into the code. Hope this helps!

Getting error in debugging my post.(Error parsing input URL, no data was scraped)

this is my website www.hackingsociety.in
actually i am getting a problem in sharing my website's post in facebook
yesterday only i got an error saying "Error parsing input URL, no data was scraped."
please help me out from here
"http://www.hackingsociety.in/2012/01/how-to-get-ip-address-of-any-user.html" => this URL I posted before also but that time it was working fine but don't know what all happend now.
please help me out as soon as possible.
i think it was a problem creatyed by me.
actually i was adding some meta tags for specific posts including their description.
but yesterday only when i tried sharing my post i found that post's thumbnail n description is not coming up while sharing so i decided to remove those newly made meta tags and so yestrday only i removed that but still not get that thing. my problem is still there.
please do check my html source code also.
please suggest me somethng with which i can get that all back again.
thanks

problem with sandcastle generated .chm help file?

i have generated a help file for my project using sandcastle,a .chm file. but the content can only seen when i open it in my machine. i have gave that file to several friends none of them can see the content of the file. what is the wrong?? how can i resolve it?? any problem with my configurations??
please help me guys!!!
regards,
rangana.
The file is probably marked as "From the Internet" and therefore seen as possibly dangerous by the internet explorer trying to display the file.
Right-Click the file, and click the Unblock button on the General property page.

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