Hello,
I've this scenario:

client pppoe TPLINK <---> mikrotik CPE antenna <---> AP mikrotik <---> PPPoE Server

inside CPE I've bridge1 = wlan1 + ether1,

if I try to start pppoe in tplink this not connect, if I start pppoe inside mikrotik CPE with interface=bridge1 it works...

where is the problem for tplink ?

thankss

Change your CPE wireless mode to Station-WDS on wireless tab . set dynamic for WDS Mode and set default bridge to bridge1 at WDS tab