Have you tried accessing the site in another browser? Currently there’s an issue with VirtualBox sites not loading in Internet Explorer without a work around.
It seems like the router may be failing to start. Here’s how you can get the log for the router on Windows:
Open Cmd.exe
Run @FOR /f "tokens=*" %i IN ('"%LocalAppData%\Programs\local-by-flywheel\resources\extraResources\virtual-machine\vendor\docker\windows\docker-machine.exe" env local-by-flywheel') DO @%i
Run %LocalAppData%\Programs\local-by-flywheel\resources\extraResources\virtual-machine\vendor\docker\windows\docker.exe ps -a | findstr "nginx -g" and note the hash at the beginning of the line. It should look something like 48ed0650a35d
Run %LocalAppData%\Programs\local-by-flywheel\resources\extraResources\virtual-machine\vendor\docker\windows\docker.exe logs ROUTER_HASH … Replace ROUTER_HASH with the value from above. Then, copy any output you see.