Stem opt extension i765 delivered after ead expired

[Ant]

My ead end date feb 22. I shipped my stem opt extension package on feb 17. Scheduled with fedex overnight delivery to deliver on feb 18. Due to weather condition the delivery was delayed by fedex. It was delivered to uscis on feb 25 after ead expired ( feb 22). 

I received a reciept from uscis case number. 

Fedex send me an apology letter stating the delay due to weather. I have all the weather delay report by fedex during those dates. 

In this scenario, i am expecting my case will be denied. What should i do once my case get denied? 

If i file for mtr is there any chance i may get approved. 

Uscis extends some flexibility. But i am eligible for those flexibilities. 

Any help will be appreciated. Thanks in advance. 

https://www.uscis.gov/news/alerts/uscis-extends-flexibilities-to-certain-applicants-filing-form-i-765-for-opt