We request that you do not release the beta to anyone that is publicly soliciting funds from others.
Thanks
No can do. They paid. They're getting the beta. That was the agreement. You can't change stuff afterwards like that.
Since this is what is termed a 'gentleman's agreement', he can change it:
A gentlemen's agreement is an informal agreement between two or more parties. It is typically oral, though it may be written, or simply understood as part of an unspoken agreement by convention or through mutually beneficial etiquette. The essence of a gentlemen's agreement is that it relies upon the
honor of the parties for its fulfillment, rather than being in any way enforceable. It is, therefore, distinct from a legal agreement or contract, which can be enforced if necessary.
An honest person would abide by the spirit of the agreement, a dishonest one would try to profit from it.
We see where you fall in this.