I also have this issue. Every day I have to bypass (remove) the device form the inline network.
There is a combination of heat from the little gold device and the general feedback from client PC (users) indicating super super slow. each day when I get near the server rack, I wait for low ISP traffic and place it back between ISP and primary line into core switch. I watch network drop out; come back up. sessions resorted.. no web url. I've not been able to connect to 188.8.131.52 nor 184.108.40.206 since mid-late July.
Without Web URL to 220.127.116.11 I cannot login to see general status or configurations / logs. I have to assume something is wrong with device since everything restores back to normal once the Deeper device is removed.
When will there be a firmware push to allow URL and access portol to return?