Changing to E-visa is one of the best thing we should all be happy about because if they is missing documents they don’t just reject you. They will tell you to submit them with an email. In person once you submit your documents and something is missing the chances of getting rejected where very high and you would lose the application fees . E-visa they will let you submit every document until approval , they can let you submit missing documents 4-5 times they don’t even mind until all documents are enough