Router to AP

I have one main Router/Modem from the cable provider. (is has DHCP).

I have three routers that I converted to Access points - I've just disabled the DHCP , and connected the source into one of the ports.

On one it works perfectly, on others it says limited connectivity.

Please advice.
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Probably IP address conflict or misconfigured default gateway.
On WAN router DHCP should be enabled (don't need to, but it's most logical place), all of them should be in the same subnet, default gateway assigned by DHCP should point to WAN Router, connection between router and AP should be over LAN port with DHCP router, not WAN port (you can use WAN only if you set bridge mode on AP - not available on every router).

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alonig1Author Commented:
That's what I did.

not my first time, it's for a client when I left everything worked . I was able to get IP address for the main router/modem.

Afterwards something happened and it doesn't work now.

I'm thinking maybe cause I didn't change the IP of the router(AP) to one on the same network.
It is always some stupid detail like
- DHCP range overlaps with AP addresses
- there are some static IP in network that overlap with AP that you had no idea that exists
- there was power outage and configurations were not saved
- AP addresses overlaps (did not change default addresses)
- and many more
alonig1Author Commented:
In the new routers there is an option to make the router function as a AP, once you do that it's works well.
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