Hello. We're delighted that you are using our services and we hope you find them useful.
Unfortunately, it looks like the search requests sent from your IP address are automated. Therefore, we have temporarily blocked your access as this is causing problems for other users.
We built the REST API specifically for automated querying, and ask that you switch your automated queries to use that service instead. Please contact us at firstname.lastname@example.org so we can unblock you as quickly as possible. Please include your IP address and confirm you have moved your querying to the REST API.