Unable to update Full Name

[FBMT admin]

We purchased the Jira Service Management Premium version, and I am the Site Admin role, but I cannot update my Full Name. 

It shows that 'Full Name is set by your admin'.

[Vedant Kulkarni_Trundl]

@FBMT admin , this means that your account is managed by your Organization Admin as Managed Accounts through Atlassian Access. You have to check with your Org Admin first.

[M Amine]

Can you check and share what groups are you in? 

[FBMT admin]

Site Admin group