Ad section is not working.

My daily watch ad section is not working. Previously I watched ad to collect gems, but now i have to waste 10 gems(sometimes more) to invert the daily task to something else to complete the daily task. I found this glitch bad as i am loosing gems everyday instead of gaining. Not only in daily section but in gems section i am not being able to watch any ad and loosing a number of gems everyday. Please fix this glitch as soon as possible.