If you've completed an offer from Adjoe but never received coins within 48 hours after completion, you need to contact them. In order to do so, simply follow the steps below.
In the app click the "Tasks" button;
Pick the Adjoe offerwall;
Scroll down and you'll see the "Support" option. Click it;
Check through the article they've prepared for you; OR
Click the "Support" button at the very bottom and send the request.
Make sure to mention all the details about your issues! They should get back to you within the next couple of days.