Below picture is my network scenerio;

PROBLEM : EAP245 connected directly to PoE Switch is working fine. But the second EAP245 connected via PoE Injector to Port 2 of first EAP245 is not working. I have tried different brands of WAP but same problem. However, if I connect a laptop to Port 2 of first EAP245, it gets IP from DHCP server and internet works just fine.

What may be the possible issue and how to resolve it.. Please help !!