Phaedra 1.0.7 cannot install updates

Hello,
I am not able to install the addons according to https://www.phaedra.io/addons/python/
When I go to Help > Check New Updates, I get the error messages that “No repository found at http://update.phaedra.io/1.x/

What is the repository site I need to add into the “Available Software Sites” so that the updates will run?
I have version 1.0.7.202002050835

Thank you,
Viktor

I have also tried to reload the server, but I got different error message.