Hi Amanda,
Thanks for reaching out with your Crio Pro WordPress theme questions!
First I want to let you know that the Crio WordPress Theme, and the Crio Premium plugin are two different products. The most current version of the theme itself is 2.18.2 and the latest plugin version is 1.8.1.
Often times when you update WordPress it will take a moment to fully complete. During this process you will see a normally see a maintenance mode page or the white screen you experienced.
If you do experience this issue in the future and suspect it to be related to Crio in any way you can use the WP Rollback plugin to rollback your plugin or theme to a previous version that worked properly until we can address the error for you.
I hope this helps! Please let us know if you have any other questions for us.