I spent the past few days trying to use the Yaesu software to program my FTM-400XDR, all without success. Last evening, I discovered RT Systems software for Mac. Somewhat doubtful, I paid the $25 and downloaded the software.
Within an hour, I had the repeaters I needed loaded into my XDR and it works flawlessly. The software plugs in the offsets automatically, either + or minus as appropriate and plugs in the output frequency without help. All one has to do is name the channel and select a power level.
Good stuff and worth more than the listed price!
P. S. - Running OS - Catalina.