Downloaded "Reader View" but can't use it - has someone any help?

After an Opera reset I downloaded and installed "reader view" again but neither the icon appeared in the URL-line nor is the function itself available - is there any idea how to solve that problem?

@acidinmyfridge said in ECOSIA Search Engine as Default:

ecosia chrome extension

Thank you so much for this very useful hint; a little drop en plus for the hugely endangered environement