Hi,
first, reverse replication is not recommended for UGC, you didn't say what steps you were following to configure reverse replication, the latest are here:
https://docs.adobe.com/docs/en/aem/6-3/deploy/configuring/replication.html#Configuring Reverse Replication
You would need to configure the reverse replication agents on the author and forward replication on the author. It can be tricky to setup and get working correctly, hence the recommendation not to use it.
Regards,
Opkar