Yeah so you have to 'X' out the AWCM service (this feature will not be available | which uninstalls it as you've seen), then run the installer again and reinstall AWCM back, and upload the cert during the install wizard. You should ONLY be uninstalling/reinstalling the AWCM component, not anything else (not the Device Services Not Device management, etc). It looks like possibly you're reinstalling the Console Node in the screen shot saying it can't connect to the signing service? Looks like the AWCM can't reach the SQL server or the SQL server URL is wrong that you were using in the first error.