68kmla donate PayPal button does not work

I tried to donate to 68kmla by pressing the Paypal button on the botton of the main screen. I went through the process and everything looked good. Later I received an email with the following text:

Two days ago you sent a payment to 68kmla@gmail.com. This payment is

still unclaimed. Often, unclaimed payments are a result of a payment

being sent to a misspelled or otherwise incorrect email address. Please

double-check to make sure you sent your payment to the intended

recipient's correct email address.

What's going on with this?

Thanks,

David