What to do/will happen if I need to rename my Atlassian URL?

Answer

When the Atlassian URL for a Cloud instance is changed, Tempo Apps are no longer working. 
To fix this, please follow these steps:

1. Go to Jira settings > Marketplace Apps > Manage apps > Administration > Connected apps page;

2. Find the Tempo app, for example, Timesheets, and expand the section;

3. Click the “Unsubscribe” button, wait till it’s unsubscribed, and click “Uninstall”;

4. Do the same for any other Tempo Apps you have;

5. Go to “Explore apps” page from the panel on the left-hand side and search for the Tempo apps that you have uninstalled and install them.

Note that doing this will not cause any data loss.