小白兔等，我是不是該resumbit the application(H1B)?

H1b premium processing, 6/5 mailed by ups next dayair, 6/6 UPS track system showed up "signed by XXX"
but so far,18 days passed, no receipt number,checks was not cleared. HR emailed to ask VSC-preimium and got a reply as following:"At this time, there is nothing in our system for XXX. The mailroom is experiencing large backlogs and hopefully you will hear something soon on your case.
我該咋辦？重發麽？？？日子一天一天過去，名額越來越少？急！