Looks like the ProScan webserver is currently offline. If it's not back up in 15 minutes and this page hasn't been updated, I'm probably away or unaware of the issue.
Please send an email to KK7QAS@somber.dev with the subject 'ProScan Issue', and I will look into it as soon as possible.
Note: This service is provided as a hobby, so immediate response might not always be possible. If you know me personally, feel free to call or text to see what is going on and get a quick ETA!