error in Add Password： wb.save("lots_of_properties.xlsx","password");

[Mr-zhangyh]

I'm honored to be able to use your XLNT，it's a very useful library I think.
But,when I save a document with a password with XLNT, I find that the Microsoft Excel software will not be able to open the document that I have saved. Could you tell me how I can fix this?
my email is [email protected]