Compile error in hidden module

Hello, how can I solve this problem and make it work on 64-bit version?
thank you very much

I attach the error when I open the worksheet.

I would help you but I only understand English. The error message in NOT in English.

Also the project(code modules) have been password protected. Is this VBA/Excel file from a "Trusted" source? What or who is the source? Do you have the password to unlock this project?

Originally Posted by Dennis7849

I would help you but I only understand English. The error message in NOT in English.

Also the project(code modules) have been password protected. Is this VBA/Excel file from a "Trusted" source? What or who is the source? Do you have the password to unlock this project?

Hello, the translation is as follows This error usually occurs when the code is not compatible with the version of office. No I do not have the password.
This is the address where I downloaded the spreadsheet.
http://www.optiontradingtips.com/opt...olatility.html

Originally Posted by shg

API functions must be declared as PtrSafe to work in 64-bit Excel. Lacking the project password, you'd need to get the vendor to make this change.

I tried to contact the author, but I seriously have my answer in the end I told him that it does not matter.