If you, as a nonprofit, have asked for donations to be credited to your account in a currency different to US Dollars, then sometimes exchange rates can eat into the weekly $50 default we use as the minimum amount we credit to your bank account.
For example, if the exchange fee has a flat rate charge of $8, then that's already 16% of the total gone.
So you can increase the minimum grant donation to whatever you wish, say $250, so that the exchange fees are a smaller proportion of the amount.
Now, an $8 flat charge would only be 3.2% of the total
Here's how (53 sec video)