what does valid value on avaliable now mean???

used to be all i had to do to set up available now was to click red circle to green circle

but today june 24 2025--form appears that I had to fill out ---setting up begin and end times for 7 days ---- after setting up times i hit submit and keep getting "enter valid" value message
--what is a valid value?? where do i enter a valid value on the time set up form?? help!!

can you send me a screenshot of what you're seeing?