It turns out that the report of many multiple unauthorized charges against donor’s credit cards by the Clinton campaign was reported by the Observer, and their publisher is Jared Kushner, who is Donald Trump’s son-in-law. (Thanks Daniel)
I looked around the internet, and with one exception, all the stories come link back to the Observer.
The exception, dating from June, is a TV report about he travails of a single donor who experienced problems.
As such, this story is unsubstantiated, and I
refract retract it.
I will continue to follow this though.