First, check if your
TextEdits are actually editable by checking the
readonly property. Make sure it is
Next, make sure your clicks are reaching the TextEdit. To test that, play your game, and try to click on the TextEdit. If it doesn't work, have a look in the debugger, the "Misc" tab: in this tab you can see which control you clicked last. For example, if the click ended up on a control which has no visuals (such as a container or a plain Control), make sure its mouse mode is set to
Ignore, or get rid of it.
Note about containers: if you use
HBoxContainer, the key to layout items inside them is to either give them a
minimum_size, or check the
expand flag in
Size Flags (vertical or horizontal depending on the case) so the control will fill the area calculated by its container.