Philips VOIP8411B/37 IP Phone "unregistered uses left" Questions

unregistered is in main display and a reg. appears under the left soft key: Press the left soft key below REG. and then press and HOLD the button on the top of the base station until the two indicator

Logitech internet handset "UNAVAILABLE" error Installed driver and plugged in USB base station, and it WORKED like a dream this morning, however now I try and the (fully charged) handset only gives me