1. Retrieve previous missing transaction
2. Add error message to indicate instruction when hitting error.
3. Add a countdown timer for 'timerout' timer.
4. EWallet Logging using Database.
- Logging will record request and response result. Log as a JSON format to store in database.
- JSON format in LogData can be formatted using online tools (https://jsonformatter.curiousconcept.com/)
5. Added Available Payment Logo.