Can't fill in username & password in Bethesda Launcher

Hi guys,

New here and I’m trying to install FO76. I use this page to do so.
Launcher installed fine and launched fine … I tried to type my user name it wont type, it wont even show the blinking line in the box … its like I’m unable to select it

My OS is Solus
My GC is GTX 970, drive is 418.56.0

If any body could help I would greatly appreciate it

Thank you