1) Add the following lines to your hosts file:
127.0.0.1 2637.vmix.com
127.0.0.1 vmixcloud.com
127.0.0.1 vmix.com
127.0.0.1 vmix.com.au
127.0.0.1 www.vmix.com

2) If vMix keeps closing, it means it has most likely reached the home server. There are two options for limiting it:
add a firewall restriction to the remote address 34.125.147.72
OR
add lines to hosts - see above (they are all behind the same address).

Both methods should work. The first is convenient, since you can still access the site with a regular browser.
The second - vMix will not get access to the server, even if the system proxy is turned on.

3) The problem itself can be corrected by returning the correct parameter in the registry:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Identity]
"SSLSupport2"=dword:00000000
OR
You can delete whole HKEY_CURRENT_USER\Software\Identity branch.

4) You can also delete C:\ProgramData\vMix\status.txt (The content of the file is currently not checked.)