Our BT (provided) signal assist box is flashing fast green. Have rebooted both the signal assist box and the BT Smart Hub to which it is connected. Still flashes fast green.
Called BT support who say they no longer support the signal assist, although the person I spoke to did try to help.
We do not get any signal without the box and do not have Wi-fi calling. Any ideas welcome. Thanks.
Don't know if this is much use to you but has to be worth a look
https://community.bt.com/t5/BT-Devices/BT-Signal-Assist-box/m-p/2002522#M12007