When your FamilySearch Login credentials are rejected, carefully verify the account information you are entering. Check for typing errors and make sure you are using the correct account details. You can also test your credentials through the FamilySearch website to determine whether the account itself is accessible. If the account works there but not during your Family Tree Maker workflow, the issue may require checking your FTM connection or authorization settings. Do not repeatedly change unrelated settings. Identify the source of the login problem first, then troubleshoot the specific issue while keeping your FTM project backed up.