On my i- 797 it says 05/24/2024 that is today, but 2wks ago I emailed them to extend the validity and in response they say it was well noted. But now if you try to reach out to them through email, is just diverted to automated machine which to me is Bs.. I hear pple say go ahead n book for appointment, still don't get it yet their instructions are so clear you wait till they email you. By June 1, it will be 3months since nvc transferred my case ,yet today my case expires. This is a mess.