You are not registered. You need a paid POGO TurfPro Cloud account. Go to pogoturfpro.com and register.
If you have allowed your subscription to expire, log in at pogoturfpro.com, choose your name at the upper right corner of the screen, choose 'Administration' and then navigate to 'Subscription'. You will be given renew options for monthly or annual service. If you wish to have your subscription prorated for your active season to end at the season's end, contact firstname.lastname@example.org or +1-971-420-0500 and we will help you get your account situated.
Once you have an active TurfPro subscription, install the TurfPro Mobile app after downloading it from either the Apple App Store or the Google Play store to get up and running quickly. It's always good to do a fresh installation to ensure you have the most updated app version. At any time, feel free to use our support system here for technical assistance.