Thank you Bloglovin!
Just to let you know that I now have the correct Bloglovin button - coded and linked to my blog.
I sent Bloglovin a message about my problem, and received a lovely email from Johanna who asked me to collect another widget - and the process is now automated.
Well, Blogger thought there was an error. So I couldn't install my widget.
I emailed Johann again and explained the problem. She emailed back with a code for me to cut and paste into Blogger layout.
Success! Only the button was in Swedish.
So I emailed patient Johanna again, and she sent me the code for a button with English word.
So I am absolutely thrilled with Bloglovin for sorting this problem out.
Many thanks to Johanna and all the team at Bloglovin.