Donation Platform for WooCommerce supports the following product types:
A simple product just allows the donor to specify an amount. No custom attributes are possible. The first steps guide walks you through the creation of a donation form based on a simple product.
A variable product allows you to specify custom attributes such as intended purpose or donation frequency (when using a variable subscription).
Grouped products are the simplest way to let the user choose between several options. Please make sure that each child product has “Donation Project” checked.