PPPoE Server on New router

Hello guys. So, I have this setup for now.

hap lite for main router.
Ether1-WAN
Ether2 and 3 - LAN
Ether4 - PPPoE

SXTLite5_1 on my roof with LAN cable connected to Ether4 in AP bridge with WDS connected to Nanostation LocoM5_1 station WDS (0.4KM link)

LocoM5_1 with LAN cable connected to SXTLite5_2 and directed in different direction.

SXTLite5_2 is not in WDS but also AP bridge and connected to SXTLite5_3 (1.1KM link)

SXTLite5_3 works as station bridge but it’s also a router, PPPoE-Client for house. wlan1 is WAN and ether1 is LAN

ALL works without problems! BUT,

I bought new RB2011UiAS 2HnD-IN
And did same config as on hapLite but I can see in neighbors list SXTLite_1 and i can connect to Nanostation LocoM5 via browser, SXTLIte_2 and 3 i don’t see on neighbors list on new router, can’t ping it, PPPoE connection is not establish and so on, Even if I reset Hap lite to default settings and setup all again it’s NOT working. But if i restore backup file on hap lite, all works smooth.

Do you have any clue what it could be?
I don’t use VLANs if that is important and i don’t know how to use them
If you have any additional question, feel free to ask.