Native Russian accountant to review our invoice for Russian customers

We are a software company that supply an app, SpeedInvoice, that you can download from Apple or Google. Please have a look at the app. I need you to validate that we meet Russian invoice requirements. The process will be that I will send you a Russian invoice, you will review that terms used and information provided on our invoice meets the standard Russian invoicing requirements. We will also need to know if there are any special scenarios that we need comply with Russian tax law. We have done this before with other countries and it is a very quick process 30 minutes to an hour is needed of your time.