Bisum disables asp controls / controls values' access into the code-behind files.

Hi,

I’ve purchased Bisum template. But when I use it in my asp.net webform application built into .net framework 4.8, it disables my asp controls values’ access into the code-behind (.cs) files.

that is, textbox.text property always returns an empty string.

Can anyone support how may I get this problem resolved asap?