Unable to invite users to JIRA

[Aleksandar Miloshoski]

Hi, I'm new here. I get an error that says: "That user was not able to be invited.
Something went wrong. Please try again later:"
I get that error even with Gmail or company emails.
I don't know what could be the problem. Any thoughts?
Thanks a lot! 

[Angélica Luz]

Hello Aleksandar,

Thank you for getting in touch with Atlassian Community!
This error appears when there are no more licenses available for the products.
On Site administration > Billing > Manage subscriptions, you can see how many licenses are being used for each product.
Then, you must remove users from products that they are not using in order to let some seats available for others or you can also remove all the Product access for new users, so you can invite them, but they will not have access until you add them to the groups that give a license.

Regards,
Angélica