I am stuck, When in Terminal, unable to enter a password

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Hi,
    The following is on a Pinephone with Manjaro
I get into Terminal and start entering,
I hit the enter icon,
It then ask's for a password.

At the point - no matter what keys are tried, nothing appears on the screen

The only password I have so far is for the lockscreen,
which I changed not long after getting the phone.

I would think it is something basic. 
For background, I use Ubuntu on a laptop

Perhaps try typing "linux" as the password, it might not display anything if its set not to echo the password (ie shows stars for each character input).

I think KDE community edition is based on Manjaro, and might be set up that way (I'm mainly using the openSUSE phosh/ plasma versions and don't have my phone to hand to check right now, sorry