@JeremyCherfas Oh, I’m sorry for the confusion created.
@JeremyCherfas When you open the Fluid App, you would see the following dialog box in which you enter the URL of the site(s) you want. In the example below I’ve entered nice(dot)social. I also have created one for my blog site by entering my blog site URL
// @matigo

@matigo Do you know why do I get this message, when tried to load flight kitchen site on Safari?

Anri theme also now on Fluid App. Only problem is app icon is same for both Social and the Blog site.