To understand what a Vietnam e-visa is, take a look at its features below: The E-visa is a single-entry visa. It will allow you to stay in the country for a maximum of 30 days.
No, the processing fee that you will pay is non-refundable if you make your e-visa application government website. Therefore, if your visa gets rejected or if you were not able to use your visa, no refund will be given.
If you want to get refund, please do some search for commercial website offer 100% money back guarantee.
No, you can only enter in Vietnam within the date specified on your e-visa. If you come earlier than that, you will be denied entry to the country.
You need to contact Vietnam immigration immediately as soon as you have noticed a mistake on your e-visa application. That way, they can rectify your visa and avoid any issues when entering the country.
Each individual traveler should have his or her own e-visa copy when entering Vietnam. Therefore, you cannot apply for multiple travelers in one e-visa application.