Service my app. Solve some problem in my app.

Seeking a app developer for topten voice app. For solve some problem of this app. Problem are given below:- 1 / The biggest problem inside apps is that you have to use VPN in some countries to make offline calls from these apps.I want these apps to call any number from any country without VPN. 2 / Automatic in the app registration Must have country setting and search box. 3/ Language change option. 4 / Notification should come like WhatsApp. 5/ Contact form inside apps. 6 / Call calculation Recharge calculation. 7 / Recharge system via coupon code. Coupon code can be made by a business user. 8 / Balance of apps does not show nicely. The balance has to be show up. 9 / Gives occasional problems in balance calculation. 10 / Robots inside the app must be added. What kind of robot add on apps you can take a demo from me? 11 / Inside the website the reseller system is currently offered it will need some work inside. If you want to login to another mobile reseller, the OTP will be available on your mobile. Built this system. 12 / A list of how many minutes a reseller user has taken and how many minutes they are selling. 13 / Balance system should be simplified from reseller to user. 14 / Coupon code generation system for resellers to users. 15 / Transaction ID from Balance to User to Reseller. 16 / Dynamic admin panel has to do some work. Notifications can be sent to all users from the admin panel. Also, you will find out the features that do not work well, after completing the work of the app, if any feature falls into my eyes, then fix those futures. 17 / Minutes should be arranged from another company and those who take the minutes from them should take credit card payment. Currently one is taken they do not take payment without PayPal And those from whom I take minutes, they have to inform me in advance. 18/Inside the Website 2 Checkout and Payment Gateway need to add. Apps link :- [login to view URL] Website link :- [login to view URL] The source file will not be provided until the deal is confirmed with anyone.