There are a number of questions similar to mine, but just to reinforce how puzzling this is, WHY CAN'T I RESET MY PIN ONLINE? Isn't the whole
Good news--you CAN reset your PIN, if you provided an e-mail address in your library account. Below the PIN field is a link that says "Forgot your PIN?" After filling in your library card number, click on that link--it will send a link for resetting your PIN to the e-mail address we have on file for you.
I hope this helps--let us know if you need any troubleshooting!