today, it happen again. try changed port number and no effect. go to expert mode and see status, sp2 status match dashboard status ,both failed, however sp3 show good on status, on dashboard showed failed. make test phone call both channel works fine. reboot with disconnecting power , refresh website ,signout and sign in without any effect. mange get in with local ip address. reboot using software bottom , than refresh obitalk web portal, everything show registered. but in expert mode system status and local access portal sp2 still failed register. but anyway, sp2 working by making test call. so it is product quality problem or software bug.
I did not find obi webportal reboot function.