How can I activate users that is already deactivated?

[Gracilla Alysa Chervil Lavarias]

We have new hires and we need to add them to our tools, including Confluence where the knowledge base articles with resolutions are stored. Two agents who previously worked on the account and resigned have returned. Now I need to add their accounts to give them access, but it's still not working.

I've already tried removing their access and then re-adding them, but the problem persists. 

I'm unable to invite them because I receive an error message stating 'We are unable to invite deactivated accounts.'

What should I do? 

[Nikola Perisic]

Welcome @Gracilla Alysa Chervil Lavarias 

Follow this knowledge base here: https://confluence.atlassian.com/jirakb/troubleshoot-invite-error-messages-for-deactivated-suspended-invitees-1384133692.html

In case none of the steps work for you, you should contact Atlassian support which can be done here