I use it dlvr.it to automatically post Rss feed on my Facebook page. But not every published link can open and show a blank page.
Feed not found
and the link that is displayed is duplicated
Where is the real problem? In my plugin or in the auto-post application?
It is impossible to tell if the code is in your "plugin" (which you haven't mentioned anything about until you used it the last question) or in the auto-post app.
Anyway, the issue is clear: something is duplicating the initial part of the URL and adding an extra feed segment.
Expected URL: http://asky.uk/index.php/92
Actual URL: http://asky.uk/index.php/feed/asky.uk/index.php/92
Fixing this should be fairly simple. You can look for the URL generation code of your plugin (whichever it is) and make sure it is not duplicating the initial part of the URL. If it is not, then go to the settings of your auto-posting app and check if it allows you to input the initial part of the URL. I mean, probably the auto-posting app is expecting only the part of the URL that comes after (and including) 92/...
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