Note that Ko-fi only supports receiving payments in a single currency. For calculations this plugin only considers the amount in the received payment information, not the currency. Changing the currency in the future will mess up various calculations. There is no currency conversion.
This plugin supports anonymization on its own accord, and also hooks into Discourse’s account anonymization. So when you anonymize a user in Discourse it will also anonymize all Ko-fi data that this plugin keeps track of, in the past and future.