1. You're targeting wrong audience
Even if you create the most eye-catching ad with the most attractive offer, but show it to the wrong audience which isn't interested in your product or service, your advertising budget will be wasted.
Solution: Develop a detailed portrait of your target audience. Their interests, needs and desires and customize your advertising based on this information.
2. Your Instagram account isn't set up right
If your Instagram page isn't set up as a business account - you can't have an ad account without this in place.
Solution: Make sure you have a business account rather than a personal account. And don't forget to fill your Instagram with all the necessary information - what services or products you sell, where you are located, how to contact you etc.
3. Landing page isn't mobile optimized
When a page isn't mobile responsive, people struggle to complete forms with their thumbs, have to scroll and zoom to find the CTA button and have problems to click on it.
Solution: Be sure the landing page to which you send your mobile app traffic responds to every size, displays information best-suited to the device being used, includes only a few form fields, and contains an eas-to-click CTA button.