If youre not seeing 2019 in your account as available to download, nobody here can assist with that. You'll have to make the dreaded call to phone support to rectify this, sorry.
Several people have run into issues with firewalls and routers suddenly blocking traffic from the *proseries.com domain. A way to test is by clicking/typing in this link in a browser on your machine:
If it doesn't work and you get something like the message below, something on your computer (FireWall, Anti-Virus, Anti-Malware) or your router / modem / isp is most likely blocking files from our domain. Check your firewall settings, restart your router, etc.