They weren't influenced by the leaks, but that didn't mean that they didn't try.  Just because Macron was a better candidate than Clinton and didn't give the Russians any openings to attack him didn't mean that it still isn't a serious situation.  A foreign government hacking into the emails of a presidential candidate and using fake news propaganda to influence a country's elections in the direction of actual evil (which is what Le Pen is BTW) is a serious issue regardless of outcome.  It doesn't matter that it didn't work; Russians literally hacked into the emails of the Macron campaign and dumped them online.  That is a crime.

And no, German taxpayers shouldn't have to finance Greece's corruption and incompetence.  Unlike the UK, who is stupid for leaving, the Greeks should be encouraged to leave the Eurozone.  They don't have an advanced enough economy to participate.