No communication on layer 3

Hi everyone. Recently we’ve installed an additional bandwidth limiter (CCR1072) for our final customers. The thing is this, the layer 2 communication works perfectly beetween the device and another CCR1072 as CGNAT Server but at the moment to ping, configure ospf or add routes with check ping the link on layer 3 does not work. The topology is the same for other 6 bandwidth limiters configured in the same way: Bandwidth limiter >> MLAG Switches >> CGNAT Servers and is working perfectly but no with this 7th device.

Any suggestions or advices for this issues? Thank you in first time.

Cheers!