it is all perfectly normal, they don't write checks started, when it will be december applicants turn, all checks will be passed directly. Don't panic, they entered the email id wrongly, that was the only problem with your case and you found it smartly, now you are all good, just wait for your turn in end of july or start of august.
I recently got my gcms notes, it says the same, no checks started yet and I am an october applicant, you should read more pages in this forum and you will have an idea about timelines.
Good luck