Hello, the method of filling in the invitation code is similar. The method I provide next applies to almost all apps with invitation rewards, including the honey circle you mentioned. The method is as follows:

Download the corresponding APP, install and open it;

Register an account and log in (you can register with your mobile phone number or other registration methods supported by the platform);

Fill in the invitation code of the inviter who invited you to join the platform in the task center.

If the entry for the invitation code cannot be found, there may be the following reasons:

The account is no longer a new user account.

The device has registered a new account of the platform, and registering with the new mobile phone number again will not be counted as a new user.

Some platforms require new users who have never downloaded the application and registered. This means that if you have this APP on your mobile phone, even if you have never used it or registered it, registering with your new mobile phone number will not be counted as a new user.