What should I do if my DTV visa application was canceled due to incorrect personal information?

There is an auto-update section in the form which picks up details automatically and usually picks up details wrongly. Please be careful there.

Also, unfortunately the application is lost now and new one will have to be filed and fees will also have to be paid again.

Seriously do thorough checks x 3 times, to ensure every detail is correct before submitting. Think of it as an important examination. Do the application in a quiet place without distraction.

Just restart the process, learn from the mistakes, pay the fee and submit again and see if they request any further information or not then just stay in the country you applied from, do not leave the country and wait for the decision by email. Once you submit, keep a regular, close eye on your application so if they do request something you can provide it

Nope, your name needs to match watch is in the Passport machine readable code. If canceled, application is null and start over with a new fee. They have warning signs for this before submitting

New application with another fee. 💸

Sadly, you'll need to submit a new application as the visa handler can't correct or overwrite personal information.

You'll need a new application.