Cannot install app from Play store - fail to connect

Installing an application from the Play store fails to download, a brief message states > "please open my apps to establish a connection with the server" Search and update work as expected. Only downloading fails. *This issue pertains to any application on both Wifi and cellular networks. Restarting the phone or connection (e.g. Toggling flight mode) fail to resolve this particular occurrence of the issue (but worth trying first!). Also if it was a generic connection issue search and update would likely be impacted. Hope this helps someone in the future.*