The Battle.net app refuses to log me in, on several computers, after I messed with my router like a dummy. I did a firmware update on my router (the router gives wifi, but my pc’s are wired), and messed with turning DHCP on and off.
I reinstalled the battle.net client, but that did not help (it lost track of several games too). I tried to reset all possible settings I could remember and I did the "ipconfig /release " , " ipconfig /renew " & “ipconfig /flushdns” trope to no avail.