A Jira connection is needed to fetch Jira items in Kendis and sync Jira changes in Kendis. If a user creates an ALM connection then Kendis automatically creates web hook connection but in case, an existing web hook connection stops working, check Jira web hook pages.
Note: To check Jira web hook connection, user should have Jira api or web hook access rights .
To restore this connection, go to your domain´s relative link: https://yourdomain.atlassian.net/plugins/servlet/webhooks where yourdomain is specific to your company instance in Jira.
Check the status of the webhook, if it is disabled or deleted.
Create or edit a webhook and make sure that only two options (Updated, Deleted) are checked on the page, that is under Issue related events > Issue.
Save the changes and go to Kendis to test the connection and sync again.