Reinstalling the app but I all the time get Network error



I was using the sweatcoin app but less than half of my steps were converted. For example today I walked with my brother a little less than 9 000 steps but only 4 900 of my steps were approved, while my brother who also use the app had 5000 steps and 4990 of his steps were converted.
So to try to follow the advice on the app I delete and reinstalled the app bit I now have an issue with my phone number. Every time I put my phone number the same message « network error » shows and I am now blocked.

Can you help me please.

Thank you.