i bought a mobile application to a developer for my business. i am from the Philippines and the mobile application i bought is about selling load wallet to retailers. as a dealers of load wallet retailers can request it to this application through sms syntax. the confirmation of in selling loadwallet must conform with the application. now that the confirmation from the telco changed the application is now useless. before if there are changes the developer immediately work on the updates. for what ever reason the developer is now asking a price and the developer's reason is we must pay the renewal of the nokia certificate. the price was not part of the agreement. what we agreed before is one time pay.
can anybody here clarify what is this nokia certificate? and what is the real price in renewing it?