Just got the same exact problem. No matter how many time I update SDK and NDK and changed the settings, unreal 5.3 keep using 33 to compile instead of 34. 
Let me know if you got any solution for this.
Just got the same exact problem. No matter how many time I update SDK and NDK and changed the settings, unreal 5.3 keep using 33 to compile instead of 34.
Let me know if you got any solution for this.