khalimovs

I am having the same issue as @honicong. Tried to solve the issue activate/deactivate with no success.

Hello,
I had the same issue with Polylang. I was not able to switch back to English after switching to Arabic. The problem had the easiest solution though. It appeared I forgot to set Site Language of WP itself in Settings>General as English UK (it was set to English US). After I changed that all worked fine.