[Error] my challenges are missing!!! My ongoing challenges are missing. First I thought they were expired but I came to know th

Answer 1

When you send challenges to large number of people... The previous people you have challenged (ongoing challenges) may disappear... But don't worry they are sent properly and your opponent might be able to play them.

Answer 2

Sometimes when you clear your completed challenge list the ones you thought were missing reappear.

Answer 3

Errors needs more reading