Routing Problem BalanceOne

I configured VPN between 2 sites: Central and Remote. Since Peplink WAN interfaces are getting DHCP from ADSL on each side all of them are under same segment so they could evantually be duplicated.

Host B can not be re-configured to another IP address remotely. On CENTRAL site VPN shows as “Route Problem” while on REMOTE site it shows VPN as “Established”. Any suggestion how to solve?
Furthermore, I´m planning to have several remote sites and squeme will replicate. Problem being that Host B requires sending information to Host A and can not have same IP address on several sites.

Any suggestion will be appraciated.