Completion of the project Marketplace on Golang -- 2

The platform works on the currency Bitcoin and Bitcoin cache(should work) The problems are as follows.. 1. Setting up the Commission of the site itself, create a bitcoin wallet and send some percentage of the user's transaction to it. 2. When you create an account, Bitcoin Cash does not generate a wallet address. 3. On the site there is a function of "Advertising", select the product, select the number of views, not generated price(always 0) 4. Also on the site there is a chat PM, when sending a message to the database(Postgres) falls immediately 2 records, and also displays both, one empty, the second with the message.