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No that is not correct for stiemap path .. Leave that one blank and it will use that folder if the admin folder is in it. Meaning if you do not use a forum folder than it is correct ..

Read this on how to get google to read your sitemap to index your site. http://blog.kissmetrics.com/get-google-to-index/ and the ipb settings for the sitemap creation are here System Settings > System > Sitemap

Then contact your host with a support ticket and show them the results. Tell them to correct the problems.

Do you have a vps? WHo runs the vps? What is the os on the vps??

Try here http://webflake.sx/topic/7958-how-to-add-the-new-button-like-webflake-index/

You also need to fix all the errors you have in your domain setup http://intodns.com/only-ph.info

My understanding is that Zend encoder does not encode scripts but rather it compiles them into code that can be executed by Zend optimizer. In this compilation many things are lost. It is not possible to simply decode such script. I think it is possible to trace it in some way (like the linux binaries can be traced with trace utility) which would show what is it doing and you might be able to recreate some of that. You would still not be able to access class or function definitions though which makes "decoding" pointless.