You cannot enter a network IP for gateway IP

Hi and Welcome to Sophos Community,

Gateway IP must be a specific IP address, it can never be technically correct to define a network address in this field.

Thanks

It is specific address. Please, see screenshots

HI  KrzysztofWitkowski , 

Could you check on Subnet Calculator and check if the interface address and Gateway is in the Range Host IP Range . Also could you Share your Subnet and Interface address. 

Thanks and Regards

Aditya Patel .

HI  KrzysztofWitkowski , 

Could you check on Subnet Calculator and check if the interface address and Gateway is in the Range Host IP Range . Also could you Share your Subnet and Interface address. 

Thanks and Regards

Aditya Patel .