You are viewing this account configuration in read-only mode, because you are not the owner of these applied credentials. You will only be able to make changes to the account, if you provide your own credentials.
"Aria Operations 8.16.x and later versions.
This is a feature introduced since Aria Operations 8.16.x and it is working as designed.
Solution:
admin
;Deleted Users
" list then do "Take ownership
" or "Assign ownership
" to change the ownership of the orphaned credential.One can also choose to deactivate Credential ownership enforcement in global settings under Administration so that anyone can view/modify the credentials without any need of taking the ownership.
For more details on the feature refer to the below document: Credential ownership enforcement