PLCnext Network Settings

Hello,
I have a PLCnext device configured as following:

My router LAN IP which gives me access to the internet is 192.168.1.1 and the PLCnext controller is not able to connect to the PLCnext Store for some reason which I guess means that the controller has no access to the web.
If I change the PLCnext IP to 192.168.1.100 then everything works correctly.
Shouldn’t the PLCnext controller be able to see the router with a mask of 255.255.0.0 ?
Thank you for your help in advance.

What’s the subnet mask of the router?

Alright. The router was 255.255.255.0. I changed it to 255.255.0.0 and it worked.
Thank you once again Martin!