Rednote asking for my id number , I dont know what is that , I tried every code I saw on my id card

It is a Chinese ID number, you can search for it.

Hi OP,

You'll see a ">" next to the "Type" option at the top, meaning there are additional options to choose from. The default is for a Chinese ID Card ("身份证"), but if you tap it, you'll be presented with a list of options - choose "Foreign Passport". ("海外护照" or "护照") It may also be labelled "Passport" - either is applicable.

Note: A U.S. Passport Card is not the same thing as a U.S. Passport - only the U.S. Passport is accepted.

ha~ha~ha.

It is not your ID number. It refers specifically to the universal ID card issued by the Chinese authorities to Chinese citizens. Most Chinese apps require users to provide a real ID to make sure the authorities can easily find you if you say anything the authorities do not like.

correct me if I'm wrong...downloading a version of red note outside of China, would grant you a version that doesn't require a Chinese ID.

This is the same as Didi, which requires a Chinese phone number, but the version I downloaded outside of China can use my Canadian number for registration.

Or else you have to use a Chinese ID, your IDs do not work.