Wallet addres change and Duplication of wallet address disallowing

3- User Change wallet is allowed so allow them to add wallet only once, if he needs to change as he click change wallet a notice should appear i.e. Contact chat support or write to support

4- No duplication of wallet address allowed, one account one wallet address if someone wants to user it on another user account system should not allow and show a message that this wallet address has already been registered with another user