thanks for the information.
after issued the sudo apt-get --purge autoremove redis-server I would suggest reinstall the builded one in case of common files presence to be sure the uninstall didn't remove one or several builded one. I think it can be simple as going to build folder and do a
And thank you so much for pointing me to the right direction. I was not clear how to delete/update these database settings. I have used Mongo_Express for this and cleaned the database according to your referenced topic. And it finally cleared the unwanted topics from my forum.