Voters are smarter than this. Voters care more about the real issues that are affecting them (jobs, economy, etc). They don't care who the KKK is voting for. The result of the election have shown that.
They claimed to have donated $20,000 to Hillary. The website claimed the claim is false.
We will never know, but more importantly, the voters didn't really care who the KKK was supporting, as the election results have shown.