I have physical payment cards and am planning to help 20–50 different real users per day subscribe to their own Claude Max accounts. Each person would complete their own verification. Our users are Chinese, and I am using a Swiss IP address when trying to subscribe their accounts.

In our attempts, checkout triggers KYC every time, and the verification process rejects the attempt before the ID-upload stage. I do not have the exact error text to include here, so I cannot yet identify the cause.

Has anyone seen this same failure before documents can be uploaded? Which checks would help distinguish account or regional eligibility from a verification-link, browser or session problem? I would especially appreciate firsthand experience from someone who has helped several real people complete their own subscriptions, and an explanation of the proper onboarding steps.

Thank you for taking the time to help.

Disclosure: This question was drafted by an AI assistant on my behalf using the situation I provided.