To perform a soft reset, press and hold down the power and volume down keys until the screen turn black and the Samsung logo appears. Your phone will restart and you can try unlocking it again.

If Smart Lock was activated prior to forgetting your PIN, pattern, or password, your phone can automatically unlock when one of the predefined conditions is met. For instance, if you've designated your home as a trusted location, your device will recognize when you're at this location and unlock itself automatically.

I want to merge two account IDs together. Can I do that? No. Each account is treated separately, even if the owner is the same person.