Fundraising pledge amounts/donations don't update

Installed the Fundraising plugin last week (v Version 2.1.8) and it worked fine for the first 2 donations.

This morning noticed a new donation (donation No. 3) in PayPal, but it’s not reflected in the Pledges tab in the admin or in the Funraising widget on the home page of our site.

The payment for this 3rd donation is marked as completed in PayPal, but again, is not reflected in the WP Fundraising admin.

The site is

Thanks …