After creating the issue on externaljira(https://xxxxextjira.attlasian.net), I tried to add team member on the issue as a watcher.
but when typing the member's account on "add watcher" window, I just meet message like "no users match your search". I can't add my team member on the issue as a watcher.
I tried to add member through MS Edge/Chrome/Firefox. but using any browser doesn't solve it.
What should I do for resolving this problem?