ITIN for wife not available can't file taxes, not sure about Stimulus package benefits.

Stimulus package info: (unofficial)

https://www.kiplinger.com/article/spending/T063-C000-S001-stimulus-checks-2020-how-much-when-and-oth...

 

My unique situation: 

* My wife's ITIN is due. (its lockdown for covid19 so I am even scared to go to UPS/FedEx to send the document for that).

* My 2019 filing is pending because of the above since I will have to file jointly to get the benefits of my dependent. 

* My 2018 filing was single. 
* based on these if I am not able to get ITIN number for my wife in the next 2-3 months I will have to file an Extension. 

* The website for the stimulus package is showing that if 2019 filing is due it will pick the returns from 2018 and the calculator show 0$ check for me. 

Question: 

What should I do to get the ITIN/ filing for 2019 and getting an appropriate stimulus package altogether to get resolved?