I have a button box for my wheel which uses an arduino micro. It has worked before but stopped with some TS update.

When I try to set a button on it as PTT , it forces me to use a combination instead of just on button.
I have another SRW box also, and when I try a button on that it works as it should with just on press of one button.
How can I set so that I only need one button as PTT on the arduino box?