So looks like a few other people here are having issues with sign in.
I've tried clearing my cache tried to redownload the profile after deleting it seen people saying try turn on auto renewal and back off again that didnt work.
My series X is connected to the internet with Zero issues but the 360 via backwards compatibility is having none of it.
Every time i try to download my profile it just gives me the same response "Cant connect to xbox live select test connection to troubleshoot your connection
For more info go to support via xbox.com/support."
This was working a few days ago and now it seems to refuse to work.