An issue with tagging people in the comment

[Deluxe Technologies]

I'm not bale to tag anyone in the comment, how can I solve this issue. 

[Jack Brickey]

Can you check if you can assign an issue to one of the users you cannot mention? If you can, then the permissions should be fine. If not then the user needs to be added to the project via permissions.

[Vickey Palzor Lepcha]

You mean you are not able to mention users in your issue comment ?

[Deluxe Technologies]

yes, exactly

[Vickey Palzor Lepcha]

Is the user you are trying to mention -

1) an active member inside JIRA and has that user logged in before ?

2) does the user have permission to view that particular issue and browse the project that issue is in ?

[Deluxe Technologies]

Yes, the user has been invited to Jira, and previously I was able to mention all the user in the comment (by @) now I'm able to assign only the user whom the task assigned to.  
Please help me to solve this issue ASAP. Thanks in advance. 

[Vickey Palzor Lepcha]

Did you make any permission changes to this project lately ?

[Vickey Palzor Lepcha]

And the users that you are trying to mention in the comment  - do they have a role inside the project ? Or are they not a member of this particular project ?

[Deluxe Technologies]

They are member of the project. And previously, as I mentioned I could tag them in the comment.

[Vickey Palzor Lepcha]

Do they have a role ? If not - assign them a role . 

I am not sure about your permissions and changes made if so - try assigning them to a role inside the project and mention them.

[Deluxe Technologies]

The users have Trusted role https://prnt.sc/p8n1mv

Can you please make screenshots and show me how to change, so that I'll be able to mention people in the comment. 

[Vickey Palzor Lepcha]

I mean go to project settings and add them under one of the roles -

Administrators, Developers, Users or any other custom roles ( if created). Else you can add users under one of those first three roles.

The screen should look something like this

[Vickey Palzor Lepcha]

[Deluxe Technologies]

I can't find this part in my project.

[Deluxe Technologies]

Finally I solved the issue, Thanks