2step Authy no QR code no computer sep by step guidance

‘’ Two step QR code no computer Authy has my code keys don’t know how to transfer Firefox saying paste Authy on Firefox or something like that enter code manually all codes at one time one by one I. Have a QR code on. iPhone I tap it but I don’t have anything to scan I to do this but I instead I give up need to. Sync everything please help me it’s something I want to do for protection but I need help