Wont install getting an invalid key error as if the backend file on wemod doesnt exist windows 10, no anti virus no firewall please help 
Can you post a screenshot of the error you are getting?
All virus and built in defender stuff is off. And firewall stuff is off. And Ran as administrator
I believe this is an issue with your ISP and caching, as I was able to access the site without any issues.
Here is the file: WeTransfer - Send Large Files & Share Photos Online - Up to 2GB Free
Got the install working per the app you gave me. Now not accepting my username I’m typing the email address thats in my account details on this site, I also tried just the username says both are invalid. I can sign in fine on the website
I’m guessing the two are related. Try switching to a different DNS server such as cloudflare’s 1.1.1.1 or google’s. Instructions can be found here: Get Started  | Public DNS  | Google Developers
After you do that flush your DNS from CMD ipconfig /flushdns
If that doesn’t work, you might need to try a VPN.