This is a tricky case that we see from time to time: A mastery mission isn't offered if your completion percentage is over 95%. In order to reach 100% mastery, please follow these steps:
- Go to your Profile
- Click Progress
- Click on Skills
- Select the Mission you are working on
There you can see the partially completed exercises you can work on to reach 100% mastery.
Internal ticket 276651927930935/385906505019314