All is well, the only 2 negative I can say is: 1

All is well, the only 2 negative I can say is: 1. I cannot delete an invoice, which is really annoyeing 2. I cannot chose my own VAT/TAX rate. I wanted to apply a lower tax rate depending on the goods, but the choice from yoco is only 0percent or 15percent! Kindly improve those to areas