I believe you must be on a retirement extension already while transferring the funds for the funds to qualify, you can't change the reason for extension and use funds not transfered on that extension or visa. I may be wrong.
METV can only be obtained in your home country or a country where you have permanent residence status. You must show proof of need, a ticket out of Thailand within the initial 60 days and then back into Thailand some time after that.
Cancelled and rejected are different, cancelled means something was wrong with your primary identification data, misspelling, missing name, uncorrected machine readable error, rejected is with your documents not fulfilling the criteria, or unsubmitted upon request.