I removed the fees settings because they were getting too complicated. In a later version I will combine the fees into one setting that will be expressed as a percentage. I already have another request where several users are asking for fees to be expressed as a percentage of the transacted amount, so this will have to happen first.
Since you are running a WooCommerce site, you should be earning funds by selling products, not by setting fees on transactions. The fee is mainly to cover blockchain fees.
Like I said, this adapter is in beta so expect more changes soon.