Why is [Add Security Level] button not showing on Issue Security Level page? Edited

[_hniki]

Does anyone know why [Add Security Level] button is not showing on my Issue Security Level setup page?
I can not add security level. I'm pretty sure it was there several days ago.

I am using Standard Version of Jira Cloud( Trial).

[Ollie Guan_携程]

Hi @_hniki ,

You can't edit project permissions, roles, or issue-level security on the Free plan for Jira Software or Jira Core. Find out more about how project permissions work in Free plans. To take advantage of Jira's powerful project permission management features, upgrade your plan.

https://confluence.atlassian.com/adminjiracloud/configuring-issue-level-security-776636711.html

[_hniki]

Hi @Ollie Guan_携程 
Thank you for your reply.

And yes I had read that article.
I thought [Free plan] and [free trial] were different.
With my understanding, [Free plan] is the one of three plans( Free, Standard, Premium) and not related to [free trial].
As I mentioned, I am using free trial of Standard plan of Jira Software.

So free trial of Standard plan of Jira Software doesn't allow you to edit issue-level security?
That's is not a real trial...