[Plugin: FeedWordPress] i can't sundicate any rss feed from any website

maybe someone help me resolve this problem?

i try to several servers and i have problem with RSS only on aws.amazon.com

I can’t syndicate any feed from other sites. maybe someone help me? ??

have you validated the feeds you’re trying to syndicate? If they aren’t valid, that could easily be the reason.

Yes, I validate all RSS, and test it’s ok.

I think about one question. I have two sites. p.ex. zoommag.pl (site for testing) and I have second site directory.flashflex.com (when I would put RSS from flashflex.com).

On zoommag.pl this same plugin work excellent, but on directory.flashflex.com, flashflex.com and other sites doesn’t work. Maybe I must change something on my server?

I try this plugin with RSS from flashflex.com on other site (digitalconcept.pl) and it’s ok. Only on my one server this plugin doesn’t work.

Now I know what I have wrong, and actually this plugin worked fine ??
I must install librarie for PHP to use xml (php-xml).