If you read our steps after filling the form, you may have seen that we recommend NOT using the same email as you did with the scammer, but a new one. Scammers can and do put trackers or return receipts on threatening emails, so if they are opened, BAM!, they know that you are looking and they will continue to threaten you.
Also, no need to check the new email every 10 minutes, as you DID set Google alerts to let you know if something should pop up, right? The steps are all there for a very good reason. You need to follow them to the letter.