Already a long while ago, the ECOSIA plugin stopped working. Since then there is no possibility to add Ecosia as the default Search Engine. Ecosia gives 2/3 of their revenues by search ads to tree planting and reforestation and to support the cause. They operate transparent, CO2 neutral and respect user privacy.

While millions of young people demonstrate world wide for climate justice and their future, Opera should do their part now and bring back Ecosia as a default searchengine, so Opera users can support regrowth of forest and the fight against climate change.
www.ecosia.org

When opening up Google Calender, the page doenst load anymore and displays a 400 error.
In other Browsers everything works as expected.
I cleared the Opera Cache and Cookies and signed in again > after sign in: 400 error:

"400. Dies ist ein Fehler.
Die angeforderte URL wurde auf diesem Server nicht gefunden. Mehr Informationen liegen uns nicht vor."

We live in times of environment destruction and cliamte change, so the least we can do is to support the ECOSIA search enginge, which plants trees for our search queries. But: the Addon to have ECOSIA as default search is gone from the Opera AddOn section:
https://addons.opera.com/de/extensions/details/ecosia-the-search-engine-that-plants-trees/

How can we make Ecosia our default search engine again,
or better, when does the addon come back?
best regards!