Thank you so much for your reply.
Yes it is IDV. I was invited to use that and successfully uploaded my documents there. I called them after and they confirmed that they already submitted my documents to UKVI.
The thing is, I cannot find anywhere to make appointment to enrol my biometrics, and was told I don't need to by IDV(UKCAS).
However I am receiveing emails, remind me of doing so. IDV(UKCAS) told me to ignore the emails as it is just automatic email sent by error.
According to them, it happens to lots of people.
I just want to know if anyone else has the same experiences. Thanks.
an email attached for reference.
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Following your recent application for Nationality you should have attended an appointment at a UK Visas and Citizenship Application Service point to enrol your biometrics (scanned fingerprints and photograph).
As part of your online application you were informed that you would receive this reminder letter if you had not attended an appointment and enrolled your biometrics within 45 working days. Our records show that you have failed to comply with this instruction, without providing us with a reasonable explanation.
If you have already booked or attended an appointment to enrol your biometrics before seeing this email, then please ignore this reminder.
Next Steps
As part of your online application, you were informed that you have to enrol your biometrics within a specified time frame. You must now return to your online application to book and attend an appointment at a UK Visas and Citizenship Application Service point to provide your evidence and enrol your biometrics (fingerprints and facial photograph).
Your application may be rejected as invalid if you do not provide your biometric information.
This will apply even if you have provided all the other relevant information, documentation and payment required to validate your application.
What happens if I cannot enrol my biometric information?
If there are exceptional circumstances as to why you are unable to enrol your biometric information within the specified time frame you must call the UK Visas & Immigration Contact Centre on 0300 123 2241 and explain why you are unable to attend. Please be aware that we may request more information and evidence about why you are unable to enrol your biometric features.
The Data Protection Act 2018 governs how we use personal data. For details of how we will use your personal information and who we may share it with please see our Privacy Notice for the Border, Immigration and Citizenship system at
https://www.gov.uk/government/publicati ... itizenship. This also explains your key rights under the Act, how you can access your personal information and how to complain if you have concerns.