See here: https://forum.ionicframework.com/t/ionic-cli-3-10-0-1-is-out/105151/7?u=sujan12
Ionic Pro is a hosted and closed source service, so there is not much we, the community, can help you with. There is a FAQ and common/known issues at https://ionic.zendesk.com/hc/en-us/sections/115003254647-FAQ-Common-Issues You can - and should - contact support at http://ionicframework.com/support#support