You're on your way to the next level! Join the Kudos program to earn points and save your progress.
Level 1: Seed
25 / 150 points
1 badge earned
Challenges come and go, but your rewards stay with you. Do more to earn more!
What goes around comes around! Share the love by gifting kudos to your peers.
Keep earning points to reach the top of the leaderboard. It resets every quarter so you always have a chance!
Join now to unlock these features and more
Hi @Vitaliy Marchenko ,
Welcome to Atlassian community.
Did you check if the user actually exists in the system? I could easily reproduce this issue by trying to add a non-existent user xyz.
User xyz could not be found. Please confirm their existence with a Confluence Administrator.
The username displayed on screenshot also seems to be incorrect. Check and try again. You can find list of users by following the article
I hope the above information helps. Have a good day.