Sorry for all the questions, I'm learnning the software

This weekend is RTTY contest. My radio (FTDX-10) is set to RTTY.
But Log4om2 changes mode to FT8 and I can't alter that. It jumps always back to FT8.
I activated the HRDLOG setting to show when I'm online ande also there FT8 shows instead of RTTY.
Setting somewhere ?
73 Phil ON4VP