Problem with DF web interface

I have been using Kraken sdr successfully for some time. As usual executed command ./, everything started up like it should be but now i cant access web interface via  browser.
I receive this message: This site cant be reached <kraken IP> refused to connect. I am not an expert, checked if firewall is not doing anything different, but it doesn't seams the  problem. How to fix this?

Sounds like you might be on a different network to the KrakenSDR? As your router can’t seem to route to it?

Or perhaps your KrakenSDR IP has changed. If it’s on DHCP the IP address can change every now and then.