Hi, Voriig,
Well, tried changing the screen resolution to 1280x800 and that still didn't help.
Capture2 shows the full extent of the Firefox screen - and there's no other buttons visible - with the exception of the close one.
Capture3 shows the screen after several Ctrl/+ presses to zoom the screen. The Box stays relative to the top right corner but enlarges. However, there appears to be a box behind it - indicated. But, it doesn't make the mouse pointer change shape when hovered over.
Interestingly, I can't seem to load characters or add them in the Adventuring module....
I'm guessing that something is missing on the Desktop? But, strangely, ERA worked when I was using Windows 8.1 and I did an in place upgrade to Windows 10. It's so-far the only piece of software that I've had an issue with since upgrading to Windows 10.
So far I've tried it in Firefox, Edge and now Google Chrome - so I'm fast running out of browsers.
And the behaviour is the same in all of them - can't load characters, can't use the Character Generation and can't load them into the Adventure module.
All the best,
Kevin.