zipzagster

I also can not see the integration after an apparently good install and restart

I was successful with this fork: https://github.com/PoppyPop/homeassistant_ecowitt Discussion: https://www.wxforum.net/index.php?topic=41676.msg426709#msg426709

I can't install the integration, even disabling SSL. Do I leave username and password blank?

HA may be willing to put it back in core. Or Nabu Casa could provide an integration and charge for it. If its official and supported the new API should...