Please fix the wall quests

I just completed the Walking Dead: Road to Survival quest as per the link generated. I wasted so much of my time and grinded, but what do I get? Nothing. Please fix your automated wall quests, as this is very frustating. And now, I can't do it again either as it won't be my first account. Even the support doesn't help.

Furthermore, this is not the first time. I have completed over 3 quests in total. I didn't get rewarded for either of them. Please either remove the automatically rewarding quests or fix it.