I can not add a new version to the project

[Matheus Camargo]

When trying to add a new version to the project, the "new version" button does not appear, but the permission schema is the same as the other projects, and these others are working normally.

[Nic Brough -Adaptavist-]

It looks like you do not have project administration rights.

[Matheus Camargo]

I am the project administrator and administrator of JIRA

[Matheus Camargo]

[Nic Brough -Adaptavist-]

So someone has changed the permission scheme.

[Matheus Camargo]

I am the only administrator of the tool, and I did not change the schemas, since the other projects continue to appear normally

[Nic Brough -Adaptavist-]

The only thing that I know of that will hide the "create version" is the permissions.  If they are correct, then you'll need to raise this with Atlassian as something somewhere is very wrong.  Your screenshots imply that you do not have admin in that project.

[Matheus Camargo]

I sent a print of the roles, my user "matheus nascimento camargo" is in the jira-administrator group and with permission in the role of project administrator

[Matheus Camargo]

[Nic Brough -Adaptavist-]

What does the permission scheme for the project say?

[Matheus Camargo]

[Matheus Camargo]

[Nic Brough -Adaptavist-]

That all looks fine, the only thing not shown is that the project is using that particular permission scheme.

I'd also try the "permission helper" at the top right.

But I doubt it will tell you anything you haven't already checked.  As I said earlier, as this is all correct, it'll need to go to Atlassian.

[Matheus Camargo]

[Matheus Camargo]