It's a scam! They lure you in with ad credit so you spend £25 and receive £75 ad credit then and additional £50 when you download the app.
The interface is confusing when you want to pause the campaign (as there is no stop button). But once you find it, it will say ‘ You have free ad credit! You have £xx left in free credits. Keep your ad active to redeem them. ‘
You think ok, i will leave it extra days where the campaign costs more hoping that the ad credit reduce... which it does but then at the end of the month, they charge your card the full amount then say yo it ad credit didn't apply. There is clearly a massive technical problem if the system clearly states that ad credit can still be used. If ad credit can't be used then simply, don't state it.
Also, the clicks are ad bots and it isn't worth using as there are other platforms that is better to invest in advertising.
Customer service is a nightmare as although they why admit the tech issue above, they still won't do anything about it and try to blame you for choosing their services