In the recent past, bloggers have complained of an inability to access Blogger, because it was displaying in a "foreign" language, generally the native language for that locale. Even advice to adjust the Profile Languages setting in the Dashboard was useless, because they didn't know the "foreign" spelling for their language.
In one case, with a gentleman complaining from Thailand, I had no recourse but to suggest that he head to the nearest Thai Internet cafe, where he could hopefully find a friendly Thai native to show him the selection for "English", written in Thai.
Some time later, I observed that this advice was not quite so necessary. You can now just go to your dashboard, and change the language setting on your own, without knowing the "foreign" language in question.
I set my language to Thai, to see what would happen. This is what you'll see, when you're in Thailand, if you haven't set your language already. If you're not in Thailand, you'll see a different display - except for one key detail.
See the pull down list in the upper right? That's the language selector.
You open the pull down list, and note the third entry from the top, that shows "English" as the secondary label.
The list is sorted in sequence by primary language name, at the convenience of the locals. Depending upon what the local language is, you'll find the secondary language names in a difference sequence - but all that you have to do is to find "English" (not "English (UK)" though!), somewhere in the list.
You select "English" using the secondary label, and you're in business.
You may be able to avoid the dashboard, and use the Set Language wizard, directly.
As above, we see the same pull down language list, sorted the same, and again with the Secondary Language labels.
Again, Select "English" as a Secondary Language entry.
And, back to normal.
Which ever wizard you use, I will still advise all who stay in any locale where their native tongue is not predominant, to learn a minimum amount of the local language.