I was in the same situation ā 3 hour drive to the nearest TECO, and didnāt want to mail my passport. So I just entered Taiwan visa-free and fronted up at the immigration office in Taipei.
Turns out you need to go on the Gold Card portal and find the link to change from a pickup abroad to a pickup in Taiwan. This is true even if you are in Taiwan in the office standing right in front of them. No, they ācanāt change thatā in their system. They tell you to do it on your phone, which is fine if it works. Mine wouldnāt, no matter who tried. And just FWIW, the computers supplied in the Taipei office lobby do not work to do this. Not quite sure what they are doing there if they wonāt even go on a government web site, but whatever. The link is not very obvious, but if you have a lot of time, you can always go to the office in Taiwan and have them find it for you if you canāt. (You might be able to, just saying. I just tried to login and my account doesnāt work anymore, so unfortunately I canāt give links or screenshots).
CALL the helpline, donāt put it off if you have a problem. The guy there is a native English speaker and heās competent. Very competent.
The people in the office will tell you to do it on your phone, and if (when) that doesnāt work, youāre told to āgo home and use your computerā. In October, I had not brought my computer to Taiwan (first time ever, too!) so I had to argue, and in the end, after an hour or two, they got an engineer to come down from āupstairsā somewhere and mess with the web site on my phone. He eventually got it to admit I was in fact in Taiwan, but when the girl at the counter and I both asked him how heād done it and what had been wrong, he said he didnāt have any idea. Anyway I took the win and got the card a couple of days later.
I took the wait and the runaround and the poor logic as being nostalgia for the Taipei of bygone times where you couldnāt pick up an ARC unless you had the number stub from the take-a-turn machine from the time you put in the application a week or more before. Or messing around getting exit permits. Good times.
ALSO ā fwiw ā when you exit Taiwan, they will treat you as though you were in Taiwan on the Gold Card, and youāll need to show that to immigration when leaving. I hadnāt offered it as I assumed I entered visa-free so I was leaving the same way, but it wasnāt the case. Not a big deal, just a little confusing at the moment.