How do I define borders in a textbox

Hello, I'm a student working on my final project, and I am making a mobile app, I'm not very good at programing and it makes me kind of dizzy, so the teachers told me that I could use Construct, because it's more user friendly. The thing is that I'm giving the user the chance to post a message in my game, so it can be see by other players or the OP. I'm having a problem with the textbox though, cause it just writes to the side and it doesn't respect the borders of the box. Also I want it to save what the user wrote so it can be posted later on.

The really big problem is that I was supposed to have 3 months to build this, and today the teachers said that I have to have a working model of my app, by thursday, so I'm kinda bummed, stressed out and trying to figure things out asap as I go.

So far I've been working on the navigation of the app, but I still need to figure out this things, cause these are the most important features of it. Any help I would appreciate.

Also, as I'm a noob here and I don't have much time, I don't really want to be messing up with plugins, I've seen some, dunno if they can help, but I wanna do this as simple as I can.

Please I appreciate the help and the time.

Textbox shouldn't do that. What are you using to test on mobile?

BTW if you need to publish your assignment, and it's on iOS, take into account there's like 2 weeks approval waiting processes.

You can use CocoonJS to run it on mobile immediately though. It's mostly drag and drop to launch the project.

You'd have to use a plugin for textbox when using CocoonJS though. Plugins are really easy to install, you'd be done in 5 min time.

Yeah, I can just run it on my iphone to show it, cause it wont be really done by tomorrow, it's kind of imposible. I'm still not testing it on a phone, only on Chrome, I will do the phone test once I finish the prototipe.

Always phone test since you might get black screened at the last minute. Or the entire thing could stall completely have like 5 fps. Always test on mobile.