Can't enter Team Arena CD Key?

Hi there! It’s been a while, but broke out my installation CDs and attempted to put together all the files for Quake III. Copied the PAK files for both the main game and Team Arena. The game launches, I can enter the CD key in for the main game and play, and I can even switch over to Team Arena. When I go into the settings menu and select the area to enter in the CD key, the first four fields will not accept any input; only the last / fifth field of two characters will respond. Has anyone else had this issue, and if so, any suggestions on resolving it? Thanks…

It starts filled with spaces for some reason. Select each field and press delete four times.

That worked, thank you!