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.
There are 2 options to solve this, unfortunately. If you’re capable of updating to 10.14 Mojave, we suggest that. The other option is that you would have to run citra.exe through a command line terminal. This is… not a simple task for those not used to it, and you lose a lot of features like being able to easily configure controls, and various other things that are easily set with the gui. The cause is a library change in the qt libraries that lost compatibility with MacOS 10.13, though citra itself is still compatible.
