Get your taxes done using TurboTax

I am trying to file federal & state biz taxes for my LLC with TurboTax Business 2023 desktop version on Windows 10.
 
I have repeatedly gotten the following error message:
 
“We’re experiencing Internet transmission problems. Your transmission didn’t go through. Intuit’s Electronic Filing Center did not receive your return(s).
Please try again later.
Error: 2”
 
This has been happening for several days now. I have read all Community entries about this issue and tried all supposed solutions. I have turned firewall completely off, reset internet security settings to lower any blocking, added all TT program files to the list of allowed apps through any security on Windows.. Nothing so far has worked. 
 
I am still getting the same error and am unable to transmit my returns.
 
I owe $0 in taxes and have a $0 refund coming. I paid a lot of $$ for the Fed & AZ state apps. It seems ridiculous that this is so difficult to figure out.
 
The entire process of using this TT software has been horribly unintuitive and frustrating.
 
Any help would be greatly appreciated.
Thank you