Facebook Verification Code Not Working and Page Access Lost

My Facebook account linked to the e‑mail address “ronyk***[email protected]” is connected to my page named “MD alamin”. For the last 3–4 days I have not been able to access this page. When I try to log in and reset my password, Facebook sends me a verification code, but when I enter the code the system shows the message “That code didn’t work” and does not allow me to continue. I tried this several times and also reported the issue to Facebook using the support and problem report options, but I still have not received any solution or access to my page. Because this page is important to me, I request that my identity be verified, my access problem investigated, and my account and “MD alamin” page access be restored as soon as possible.