When you're using an Android tab device in your store. You might use the DealPOS Mobile App to make sales transactions at the cashier. When you are logging into the DealPOS mobile app and encounter the Capacitor HTTP error message, you can find guidance on the issue and steps to resolve it below:

When your time and date on your device are not set to automatic. There will be a possibility that the date on your device is not suitable with the Certificate Validity Period. So it will cause your DealPOS App unable to log in.

When you encounter a Capacitor HTTP Error message on your DealPOS App. You might try to check your Android Device Version. You can easily check your Android Version by opening the DealPOS mobile app and seeing it on the Login Interface Page:

The minimum Android version required on your device to run the DealPOS Mobile app smoothly and without disruptions is version 8 or higher.

To adjust the Android's time and date to be automated, you can follow the steps below:

When you already set the Automatic date and time, you can try to reopen your DealPOS mobile app and log in again to your DealPOS account

You might try to Clear your DealPOS app Cache. To clear the DealPOS Mobile App cache, you can follow the steps in this article: Clear DealPOS App Cache

If the previous method still doesn't work, you might try to change/upgrade your Device to be able to use the latest version of Android. Since the minimum requirement for the DealPOS app to run smoothly is Android version 8, this information is based on an article from Wikipedia that explains the Android version history table. You can view the article at the following link: Android version history on Wikipedia.