Hello, I am Mac user and have a problem with a .gfp file. Excuse me, my English is more than poor, so I have to translate that.

I bought a website creation program about a year ago. This program creates a.gfp file from the created web pages.
I have created almost all my webpages with this program. A few weeks ago, my external hard drive has given up the ghost and thus the original gfp file has disappeared from a web page. Although I have a copy but only as a. Txt.

Now I tried from a website this gdp. File in the hope of somehow saving my website.
But I have not even found a tool for these files. Not for Mac, anyway.

Can anyone help me here?
Thank you so much Herzass