I already had registered my device in the app but still unable to be recognised by the app. It kept saying device reached max but only one device is registered. FYI, I'm using Huawei phone.
Sorry to hear of the issues that you're having with your app access.
Have you been able to resolve this since you last posted?
If not, please could you advise which app you're having trouble with and I can try to get this looked into further, should you need me to.