who can help look at this problem?

Have you tried to read the help about these messages yet? Paste them here will help others to understand your situation.

roughly readding this:

<div class='quotetop'>QUOTE </div>

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Error: Symbolic name "extclkena3" must be port of megafunction, macrofunction, primitive, or state machine "pll"[/b]

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I suspect the PLL outputl extclkena3 is somehow misaligned with you destination port. You can check them in RTL viewer.

Wait for more detail.