Linking user accounts!
Hi everybody! I am developing the function of linking the LINE user account to the project's DB. I have followed the instructions in this link: https://developers.line.biz/en/docs/messaging-api/linking-accounts/
If all steps are done, the linking user accounts is successfully. But if in step 5, the user does not access the linking url for 10 minutes after receiving the link, the linking user accounts is not successfully.
Steps cannot be repeated because userId received only from webhook events object when adding friend channel. If you have added a fiend with channel, you cannot add a friend again. Is there a way to solve this problem?