Install Redis on multi cPanel account shared environment?

I have one Server where WHM Panel is running and Redis is installed.

This redis is being used by two different cPanel account on the same server.

In both these cPanel account Faveo Helpdesk is installed.

When these two different account push the jobs to que, information gets exchanged between the jobs.

e.g: Email is going to user of first account but from name is of the second account
I tried use different database id in redis or different queue name but still the data is overlapped and exchanged between these two applications. seems like a security lapse.

How can i fix this?

Using CENTOS 7.4 kvm