Error in writing WPs

When I in “FLIGHT PLAN” and writing WPs, a pop-up window appear and say “error”
I can not solve this problem and I don’t even know what’s wrong
Can anyone help me?

Mission Planner version is 1.3.63


the error is invalid number.

check your numbers, and also , vs .'s

Hi, which numbers do I check?
I just install the latest version and click the map, then the window pop up
I don’t know the full title of the window cause it can not maximize

why is your loiter radius blank? and the dropdown blank as well?

these videos are how I install MP and the error occur
I install 13.62 and 1.3.63 respectively (remove and install next)