Can you please tell us that CID you have, you can check using Davinci, XS++ or PhoneXS. In addition, please tell us which part of the phone software you flashed...(FS, Main or both)

From the sounds of it, you have a CID49 k750 and you flashed it with a CID36 w800 firmware. I did it once and the phone ended up like you described. So all you need to do is download any CID49 k750 firmware and flash it again, using XS++ is easiest for me. If you still want a w800, there is ONLY ONE firmware that will work for a CID49 phone and you can find that somewhere on the SE-NSE forums. It also doesnt matter which firmware you use to flash your phone, as long as you dont dl a locked carrier firmware you should be fine. I'm in Canada also and i tend to use HK or China firmware for the installed language fonts.