Checkout Page not working properly

1. Make sure you are enabled Available days and times.

After end of the available time no one can make a order.

2. If it says shipping address required

Settings > order configuration > Area based shipping charge

If Area based shipping charge enabled then you have to add shipping charge from Shop configuration > Delivery area

3. If it says name Name and phone field required

Maybe you are logging into admin or user panel. Change the browser or remove all tabs and try again.