So, you mean on client I can only connect with lan no wireless. But, with my computer I am connected wirelessly. How would I connect my other devices, I added the gateway to 7210 from my main router.

First I have main dsl router which is assigning the ip 192.168.1.1 then wireless router 192.168.1.4 is connected to it. Then 7210 192.168.1.245 is connected as Ap to 192.168.1.4 wireless router. This is setup in my office. In my home I have 5210 192.168.1.244 setup as client and wireless router 192.168.1.243 is connected to it. Now when I connect to 192.168.1.243 wirelessly with my computer I get assigned auto ip but wen I connect with my mobile or ipad I couldn't get auto ip. This is my problem, hopefully I clarified my situation.

Can you please explain what is it mean by same dhcp pool? On my main dsl router which is assigning dhcp, the iP range is from 1 to 254. I have setup 1.168.1.243 as ap. Only main router is ZTE rest are all tp link.