To try to summarize information, since people ask about this all the time...
Your OpenMRS ID does not (automatically) let you log in to JIRA and Confluence (issues.openmrs.org and wiki.openmrs.org). You must manually request this access.
Unfortunately, bots and people were creating a lot of spam content, so we are forced to require you to prove that you're human, and you want to log into the wiki or issue tracker for a legitimate purpose, and a human must approve this.
What should I do?
Go to http://om.rs/helpdesk, click on Create a New Case, and ask for access to the wiki or issue tracker, explaining why you want access.
How would I know to do this?
We have a banner on JIRA like this:
On Confluence non-logged-in users see this on the home page: