Translation Management not queuing up new requests after upgrade from Docs 14 SP3 to 15 SP1

After our upgrade from Docs 14 SP 3 to 15 SP1, translation management, translation jobs functionality has stopped working. I am unable to find anything in the logs which points to an error.

Updating topics/maps in Organize Space with status of released while requested languages populated and enable translation management checked/selected doesn't create the target languages and doesn't show any item queued under Events --> Translation Management. Any clues as to what configs to check would be helpful. Thanks in advance...

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