Facebook asked me to change my password and I did then they said they would send a code to my phone and they didn't and when I asked for a code again, they blocked me for 24 hours and this has been going on for 3 days
System Configuration: Android / Chrome 87.0.4280.101
Clear your browser's cache and cookies and wait 96 hours before requesting a new code. If you still can't receive the code to your phone number, take a look at this article.