That is strange. So you get the exact same message as the topic started explained when you try to connect on Facebook/Topeleve.com. Could you make a ticket on Nordeus Support and provide your Facebook ID and the exact time when while you couldn't connect, so we can investigate further.
I use the game on my iPhone as well, and it works fine usually. Every now and then i need to manually turn off the app and restart it so it will connect again.
I will write the exact time the next time it happens and i will share it here - as far as for today the game works fine for me.
When it doesn't work on the computer - it doesn't work on Facebook and neither in topeleven.com.
happened now: 14:18
Same to me, started at approximately 15:45 Kiev time
Same to me - today, yesterday, day before yesterday...
Can't log in via facebook 21:05 Beirut time please advise ?!!!!!
to me it is happening everyday in the evening, from hours 16-17 to 22-23