This one was interesting. Let me explain exactly what I have done.
First there was a connectivity problem. You have a default route on Rmb sending everything to 11.11.11.14 but you dont have dynamic routing protocol running between ISP1 and Rmb, so, the ISP1 router 5 does not know how to get to 192.168.0.0/24.
What I had to do is add a static route on ISP1 R5 sending the 192.168.0.0/24 to Rmb.
ip route 192.168.0.0 255.255.255.0 11.11.11.13
But now, you need to tell the rest of your router that the network 192.168.0.0/24 is on Rmb. So far, I only told to ISP1 router 5 about that.
For that, I did a redistribute static on OSPF in ISP1
router ospf 1
redistribute static subnets
This way, ISP1 advertized to the other routers where is the network 192.168.0.0/24.
Connectivity problem solved. But, it will not work yet. It turns out that you have NAT on the Rmb Router for exit traffic.
By doing the NAT, the routing does not work as expected. So, I remove the network 33.33.33.0 from NAT by denying the network on the NAT Access List. Bingo!! it works now.
ip access-list extended FOR-NAT
deny ip 192.168.0.0 0.0.0.255 192.168.1.0 0.0.0.255
deny ip 192.168.0.0 0.0.0.255 33.33.33.0 0.0.0.255
permit ip 192.168.0.0 0.0.0.255 any
!
!
