If you're having an issue creating and/or saving a group for your Lock sessions, we're so sorry you're having trouble.
Unfortunately, this is actually an Apple bug rather than an Inner Workout-specific bug. It's affecting other companies' apps as well, including the biggest player in the app-blocking space.
This issue was first escalated to Apple two years ago, and we're all awaiting a fix.
In the meantime, we recommend completely exiting out of the app and then trying to create a group again. It may take a few tries to select a group once you've reopened the app, but it should eventually work.
Once you're able to create a group, Lock sessions should be smooth sailing.
Feel free to reach out via email if you're still experiencing an issue.