A company called Sandboxx has suspended its donations to Marines & Mickey after allegations of fraud.

Sandboxx has a mobile app that helps friends and families send letters to loved ones in basic training. The company’s revenue comes from that app, and founder Sam Meek said he liked that Marines & Mickey helped allow parents see their children graduate from boot camp. So he started giving a portion of his revenue to the foundation.

But after allegations from organizers of the Lance Cpl. Skip Wells Foundation that Marines & Mickey founder John Simpson is a fraud, Meek has stopped those donations.

“What I would like to see is an audited financial statement,” Meek said.