title: Google Colab Pro+ Disconnects and Stops Executing, and Only Allows One Session
body: <p>My notebook disconnects randomly and stops executing. It's supposed to send files to Drive but stops and won't reconnect.</p>
  <p>Also, as of today it's only allowing me one session at a time. I thought the limit was more?</p>
  <p>I've checked and I'm still active on the Pro+ plan, which I only paid for about a week ago.</p>
  <p>This affects all of my notebooks as well as new copies.</p>