Just enter your country of nationality in your passport. When my wife enters NZ on her NZ passport her nationality is NZer, won’t accept Thai even though she looks Thai to me😂
The bio page and mugshot may need to be in jpg/jpeg format. Other supporting documents normally okay in that or pdf. There might be a max like 3 MB for images.
We’ve had a similar system running in NZ for a year or so. You get a confirmation email within a couple of minutes of submitting. It’s all linked to your passport, scan on arrival, done. The dinosaur hand-written card system is still available for anyone who is unable to complete electronically or likes filling in forms. No reason for it to take three days, maybe they meant you can only complete within three days of travel.
Basically the same as the NZ Traveller Declaration we’ve had for around a year which doesn’t require downloading/printing anything, hence my question. Whatever, at least it’s progress from those draconian cards you used to fill out on flights🙂
Did you apply for retirement OR to stay with Thai family more than 60 days? The latter would likely require proof of relationship in the Supporting Documents section. Retirement you're flying solo.
Go to your embassy, get it certified, then you have it translated, finally go to Thai Consular Services to have it legalized. Then visit you’re amphur where you’re living to get it registered.