Hello. I have and iap in my application, application has been successfully approved and it is in the appstore now, but iap are in the waiting for review for more than 5 days. And iap is not available for users, how can I solve it?
Are you certain the IAPs are in 'waiting for review'?
Usually they get approved with a binary.
If these are the first IAPs for the app they must get approved with a binary. Does the app have other IAPs already approved or are these the first IAPs for the app?
Visit App Store Connect and check your contracts to confirm they are current/active.