The most common reason for this happening is that you haven't set the availability of the Maid/Team:
Make sure to mark their availability for each day as 'Available' and then set the Start/Stop times:
Their availability has to match the date/time of the job you are assigning them too. If they are part of a Team but are not available for the job then the entire team will be NOT be available for selection.
Need help? We're here - help@maidily.com