BGP loopback wrong route pinging issue

Hi, I am trying to configure EBGP beetween an Enterprise, ISP and Customer.

So far I have all neighbours up, with the ISP-1 able to ping the Site A and the Customer.

The issue I am having is that the Customer has a route learned which goes via ISP-1's loop back which can't ping site A. I was wondering what I have done wrong in my configuration.

 192.168.12.0/32 is subnetted, 1 subnets B 192.168.12.1 [20/0] via 10.10.100.5, 00:00:44 

Diagram: https://imgur.com/a/nCMkn

Customer

 router bgp 400 no synchronization bgp log-neighbor-changes network 1.1.1.1 mask 255.255.255.255 network 2.2.2.2 mask 255.255.255.255 neighbor 10.10.100.5 remote-as 200 neighbor 10.10.100.5 ebgp-multihop 2 neighbor 10.10.100.5 update-source Loopback0 no auto-summary 

ISP

 router bgp 200 no synchronization bgp log-neighbor-changes neighbor 1.1.1.1 remote-as 400 neighbor 1.1.1.1 ebgp-multihop 2 neighbor 1.1.1.1 update-source Loopback0 neighbor 10.10.12.5 remote-as 100 neighbor 10.10.12.5 ebgp-multihop 2 neighbor 10.10.12.5 update-source Loopback0 no auto-summary 

Edge-1

Can't ping 1.1.1.1 or 2.2.2.2

 show ip route bgp 1.0.0.0/32 is subnetted, 1 subnets B 1.1.1.1 [20/0] via 10.10.100.5, 00:02:44 2.0.0.0/32 is subnetted, 1 subnets B 2.2.2.2 [20/0] via 10.10.100.5, 00:02:44 router bgp 100 no synchronization bgp log-neighbor-changes network 192.168.12.1 mask 255.255.255.255 neighbor 10.10.12.6 remote-as 100 neighbor 10.10.12.6 update-source Loopback0 neighbor 10.10.12.6 next-hop-self neighbor 10.10.100.5 remote-as 200 neighbor 10.10.100.5 ebgp-multihop 2 neighbor 10.10.100.5 update-source Loopback0 no auto-summary 

Edge 1 - can ping ISP-1's loopback Customer A - can Ping ISP-1's loopback ISP-1 loopback can not ping 192.168.12.1 - Issue

Many thanks

Edit: Formatting