I don’t believe that was their (subsequent) question. Originally, it seems like there were having trouble accessing it at all, but updating the firmware solved that problem. Subsequently, the poster asked if it was possible to access it from anywhere (which I assume meant even outside their home network), and someone suggested Windows host viewer which worked for them. I’m guessing they can access it without the viewer from other devices on the LAN.
An alternative to the host viewer (esp. for non-windows users) would be setting up a vpn server or ssh tunnel on the local network. It’s important to get security right in this case though as you don’t want anyone with free access to your local network, especially a local network with unsecured actuators controlling heating elements!