The Cloud UI has changed since this question/answer were originally written. This isn't always the case - we're talking about maybe trying to identify some of these posts on Community so it's easier for people reading answers to know if it applies to them.
You're definitely on Cloud, which is a bit different than Server now. To see if you have admin in Jira Cloud, you're going to look for the Jira Settings option after clicking on the Jira icon:
If there's no Jira settings option, there's no Jira Administrator permission.
Well, it is five years old, with an update from Daniel 3 years ago. However, that's also not quite right any more, as Cloud has moved back to a top-bar format. Which has the cog near the top-right if you're an admin of any sort.
p.s. The Community chose not to implement down-votes because of the rampant misuse and abuse of them in the previous systems. People used them on correct answers that they didn't understand or like, and even for a form of bullying in the extreme. We just couldn't come up with a decent use for them that wouldn't be abused.
This would be one of the cases - your down-vote would not be fair as the original answer was correct at the time of posting, changed a bit when the UI changed, and has now become correct again, as shown in the screenshot here.
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