Ubuntu 18.04 droplet - can't TLS handshake with https://repos.insights.digitalocean.com

Hi,

I’m trying to ‘apt update’ and receive the following error. This is new, this has not been an issue for the life of my droplet (well over a year).

Hit:1 http://mirrors.digitalocean.com/ubuntu bionic InRelease
Hit:2 http://mirrors.digitalocean.com/ubuntu bionic-updates InRelease
Hit:3 http://mirrors.digitalocean.com/ubuntu bionic-backports InRelease
Hit:4 https://deb.nodesource.com/node_13.x bionic InRelease
Ign:5 https://repos.insights.digitalocean.com/apt/do-agent main InRelease
Hit:6 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic InRelease
Hit:7 http://security.ubuntu.com/ubuntu bionic-security InRelease
Err:8 https://repos.insights.digitalocean.com/apt/do-agent main Release
  Could not handshake: The TLS connection was non-properly terminated. [IP: 199.59.242.154 443]
Hit:9 http://ppa.launchpad.net/costamagnagianfranco/borgbackup/ubuntu bionic InRelease
Hit:10 http://ppa.launchpad.net/dosemu2/ppa/ubuntu bionic InRelease
Reading package lists... Done
E: The repository 'https://repos.insights.digitalocean.com/apt/do-agent main Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I did use netstat to discover what appeared to be a Chinese IP address actively ssh’d into my box. I rebooted the box but still can’t connect to https://repos.insights.digitalocean.com - I can connect fine from home so this is localized to my droplet.

Was something potentially changed with my network configuration? Am I being MITM’d?

Thanks.