Thanks for following this thread, @kbaezasapcr. 

You can go to this link to open and furnish the 941 for Q2 2021: https://www.irs.gov/pub/irs-access/f941_accessible.pdf. 

Enter all the necessary details manually, then use the Download or Print option. Once done, mail it directly to the IRS. 

For future reference, read through this article to learn more about how QuickBooks Populates The 941.

I'll be right there to help you out again if you have additional concerns about filing your taxes. Take care!