Where are you seeing that PCR wasn’t enough? Assuming they now consider TW a high-risk country, from https://www.klm.com/travel/tw_en/prepare_for_travel/up_to_date/flight_update/index.htm:
You need to show a negative COVID-19 test result if you’re travelling from a high-risk country to the Netherlands. You have 2 options.
Option 1 - You have to show 1 test result:
- a negative COVID-19 NAAT (PCR) test result based on a sample that was taken within 24 hours before boarding your flight to the Netherlands.
Option 2 - You have to show 2 test results:
- a negative COVID-19 NAAT (PCR) test result based on a sample that was taken within 72 hours before your arrival in the Netherlands.
- a negative COVID-19 rapid test result based on a sample that was taken within 24 hours before boarding your flight to the Netherlands.
Please note that even if you’re vaccinated against COVID-19, you still need to bring a negative COVID-19 test result.
From 1 June 2021, you must quarantine for 10 days if you travel or return to the Netherlands after staying in a very high-risk country. Please check if the country you’re travelling from is on the very high-risk list . This requirement also applies if you have been vaccinated.
When the Netherlands is your final destination and you are travelling from a very high-risk country, you will receive a quarantine declaration on board. Please note: you are required to fill this form out.
[EDIT: also in previous advisory, “*All types of NAAT test (Nucleic Acid Amplification) are allowed, including PCR and LAMP.”
Although if customer service is saying something different…]