I sent my tps application on July 3rd through usps with g-1145. It was delivered on july 7th. I sent my wife's application the same day as well. My wife got her text confirmation on July 11 and receipt letter on mail on July 15. Its July 19 today and i have not got any kind of confirmation yet. Check is not chased as well. I called USCIS many times already and they asked me to wait for one month at least. I also emailed lockbox support and it takes 15 days to get a reply. Since the deadline is July 23 to reregister its really stressing me out. Has anyone been through the same situation?

Bro, since you have already submitted your application before the deadline (i.e. July 23), you should be fine. Don't worry.