Placing Text "Text Style Dialogue" box does not open.

Good Morning all,

Ok, I need to Place Text, Click on the "A" and open the Text Editor box,

but i need to change the text style that's currently active,

I click the three dots at the top (to Open the "Text Style Dialogue") -

there's my problem. it does not open.  there is no response.

I cannot open this to import any new texts....

# All i can do is reference in previous jobs of my desired scale to adopt their scale texts/fonts...

Is there anyone who can help me decipher whats gone wrong, how do i fix this 'locked' Text dialogue... ?

Regards Terence A Tranquille