Update: apologies for the earlier comment, I can see now that you already contacted us and it is still not clear what you're not able to install apps. Can you please check if your Jira license is valid? You can check it at Administration | Applications | Versions & licenses.
The team is looking into it to find any clues that can help to determine what can be the cause of this problem, if it's not Structure. My colleague will send you an update in the ticket you submitted when we can share anything specific.
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event