Do the Toloka map tasks refresh in one location?

I live in Malaga, Spain. I have downloaded the app and I see about 40 or so tasks in and around the city, mostly they are not in the city center. How do these tasks work? Do new location checking tasks come or once these are completed there won't be anymore tasks for my location? Is there a possibility to fail these tasks, it would be very tiring to go to all of these and not get anything.