Hi,
I am facing an issue on my wireless router modem. I am using the DSL internet plan. The modem is Smart RG SR505n https://www.acanac.com/hardware/smar...?package=fibre , it has a build in router. the problem is the coverage of the router has declined within \a single room. The modem router is in the hall. I used to get the internet from the lawn and farthest room. But now, I am not getting the signals beyond the hall kitchen. What might be causing this? There are no fluctuations in the internet speed when I am within the range, i.e., the hall.
Please help me identify the issue and resolve it.

Thanks.