"Oh No! Something went wrong, and we couldn't connect to the Minecraft services."

The Minecraft launcher is repeatedly connecting to the internet and disconnecting every second or so. 
Another thing of note is, that when logging in, my avatar does not show up.

it will only let me play the demo even when I purchased the game nearly 6 years ago. 

Note: Yesterday, I changed my passwords, as well as changing the email attached to my microsoft account is linked to. 

However, these have not affected anything else in my user experience, but I thought it'd be good to say so regardless. I was also active the night that I edited my info, so I doubt it has anything to do with the problem.