Is there any limitation or quota for translator / App Inventor translation?

Hi Everybody! I created a App for translation last week and it worked well until yesterday. It shows "Yandex error 52" or "Error Fetching Translation". What's the problem about this? Is there any limitation or quota for translation?

Thanks a lot!

Are you getting this error when using the emulator ? If so, it is unlikely to work, you need to test with a real device.

Or is this with a compiled app ? If so, are you sure you have a network connection ?

I tested it on my cellphone. It showed "Yandex returned error code 502"