Ignore the popup. It was meant for “foreign spouses of Taiwan citizens”. Your gold card ARC can be used. Btw, you need your ARC number, which you can see when you get your card, or case status check on the gold card application website.
As you are applying resident visas for your family, prepare your marriage and children’s birth certificates to be authenticated as well. Authentication needs to be done from TECO where the certificates were produced. If it is other than LA, you need to complete the authentication first.
You will need the authenticated certs to convert the resident visas to ARC in Taiwan (within 30 days of arrival).
Call the TECO office(s) to check the required docs and procedures. Be prepared to make copies and also notarizing copied documents.
