Networks not learnt over OSPF

Hi,

We are deploying a SDWAN in a customer premise environment with OSPF configured towards the LAN. This sdwan is connected to a cisco switch(L2 switch) which is connected to a cisco router. OSPF is configured in between the sdwan and the Cisco router with Area 0, I see the OSPF neighbor-ship to up in between both sdwan and cisco router.

My question here is, out of the 5 networks advertised by Cisco router, I see only one in the SD-WAN LAN routing instance. Is there a way to figure out why the other 4 networks are not being learnt by SD-WAN? Am I missing anything?

I do not have access to any other device except the SD-WAN.

Edit - no access policies on the cisco router

Help much appreciated. Thanks