Service area?

I am new to Rover because I am needing to find someone to walk my dog. I entered my information and then a map comes up with many potential candidates. I've looked for those that live nearest where I live. There are a couple of service providers whose location dots are within 1 mile of my home and when I go to their page and see the service area, they look like they cover a good 5-10 miles. When I go to "Contact" and I'm entering my needs, I see that despite their location being supposedly within a mile, it shows that I cannot contact them because I am outside their service area. What?!?!? I'm supposedly inside of a mile but too far away? Do they only provide service to people that live on their own street? Their own house? Why even put up for service if you can't go more than a half-mile or mile from your house?