I was once on the other end of this -- witnessing a startup that failed "the wrong way". The unethical way. I decided to use a startup to raise some money for a non-profit. Their business model was to help fund events / organizations with their platforms, and take a fixed 2-3% commission on the funds raised. I raised $500 using the platform. But I never received the check for the $500. I knew the founder personally.…
Eeesh. Nothing is more uncomfortable than a friend who owes you money.
"Never loan money to a friend with the expectation that you'll get it back, be ready to just let it go."