i found here on the community :
1. remove the VIP
2. do force drop on the publisher to make sure it is no longer showing on the dash board.
3. Do a db reset on the sub
4. I usually do a reboot on the sub after
5. In the cli do a sub join.
but we can't disable the VIP since that will cause outage , any ideas how to get the subscriber working back without disabling VIP ?