Facebook confirmation code not working

hello dear Facebook team.. I am long time user of Facebook social service.. but 2 days ago I have to one problem on Facebook log in… I can’t understand what I do at this time.. because Facebook team give me the verification code number.. but that code are dosent work at this moment.. ? I also send my number for verification code.. one time come.. but now still not working that code number.. so why.. ?

Password reset/tried too many codes
My Facebook logged me off 2 days ago. I forgot my password, so when logging back in I requested a reset code to my email (via Android app) but it didn’t come, so I sent it again to no avail. Tried from Desktop and code was sent to email BUT when I tried to enter it got the message “You have tried too many codes. Try again later.” 1 day later and suddenly the FB app allowed me to login by (I’m assuming) linking with my Gmail then promoted to enter a new password then again to confirm my new password. I am now back in FB, HOWEVER…the new password I entered does NOT work when trying to login on Desktop. Since I’m still logged into the app, I tried changing my password in account settings but the new password I made doesn’t work there either. Again, sent ONE reset code to my email but upon entering it got that evil message saying I had tried too many codes I’m anxious I’ll get logged out of the app again then be locked out of my FB for good. There seems to be a bug somewhere in my account when trying to remedy this and update my password. I can’t find any emails or support personnel to help me. No tips on the self help page work.