Unable to see PPPOE dynamic IP(cleint side) in our AP(BTS) Registrationn list( Cleint router & AP are Mikrotik devices)

RouterOS Beginner Basics
1

We have installed SXTLite 5 device as PPPOE at client end. Now we wish to see/access dynamic IP allcated by our server to PPPOE cleint.
Connectvity between cleint & AP end is absolutely working fine. How to access client end device using this dynamic IP?