I need to configure a site to site RBLHGG-60AD to RBLHGG-60AD

Site 1. Lan side pfsense router is 172.16.255.254 /16
Site 1. WAN pfsense router is 192.168.88.254
Site 1. RBLHGG-60AD is 192.168.88.2
Site 2. RBLHGG-60AD is 192.168.88.3
Site 2. WAN pfsense router is 192.168.88.253
Site 2. Lan side pfsense router is 192.168.100.254

From Site 1 RBLHGG-60AD on 192.168.88.2, can ping 192.168.88.3
From Site 1 RBLHGG-60AD on 192.168.88.2, can ping 192.168.88.253

From Site 2 RBLHGG-60AD on 192.168.88.3, can ping 192.168.88.2
From Site 2 RBLHGG-60AD on 192.168.88.3, cant ping 192.168.88.254




Any ideas why I can't ping to 192.168.88.254 from 192.168.88.3

Can you ping 192.168.88.254 from site 1? I'm not at all familiar with the pfsense routers, so I don't know if they have the ability to be configured to not respond to pings.