So basically I heard that people use the plugin called AutoScale Lite. It adds a “constraint” thingy to make sure guis look the same in every device. However I used that it doesn’t quite seem to work. For example:
In studio:
In game:
Hey there, first go to the properties menu and find size
Then set the offset for both the x and the y to 0. After this, play around with the scale of the x and the y. If you set it to 1 for both the x and y as seen in the example, it will cover the entire screen. I recommend setting it to 0.7 on the x and 0.1 on the y for your example.
If you need any help then just reply to this message and let me know