My press + doesn’t work on super mario maker 2.
In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.
Please post a pic of your controller’s mapping.
If you had the game on your Switch, then you’d know that you need to press
ZL + ZR, and as you need 8.1.0 firmware files in order to see those fonts, you can’t.
But again, if you had the game on your Switch, you’d know.