Bringgo won't/can't connect to Apple server after purchasing EXPENSIVE lifetime update. Can't download!

Hi, newbie here!

I purchased the trial versionj of Bringgo (99c) and after a month it required my to purcahse the updated licence ($65).

After purcahsing licence I cna't dowload the updated software, I get the message "Alert. Connection to Apple software failed. Please try again later"

I have tried in many locations, all with great connections.

I can downlaod anything else I want form the App staore, I have done everything Apple suggested, and wrote to the developer and surprise - no response.

Really need some help with this - it is my in car navigation.

Thanks