What's wrong with my phone

This is a stupid situation but I have a samung galaxy s5 I had a fingerprint password but last night I wanted to do a pin so I right the pin password snd I slept right before it said confirm I open my fone and it has no password so I go to settings and it a says confirm pin I wrote the exact same pin and it doesn't work does anyone know how I can take this off I need a reply ASAP withoit having to pay

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