Need a programmer, developer or someone familiar with the software behind the musescore app, encoder...

Retrieving my data

A very good day to you,

I'm writing you with a proposal if I could get in contact with one of your programmers if that would be possible. You must be wondering why, so let me paint the full picture.

A few years ago, I ran into a few problems with my computer and lost a great deal of data as I didn't have them back up. I had to use an online tool to get my data back, but this way, you can only get back so much. I was able to regain a portion of my scores back - these scores have been presented by the program in two way:
1) By a ZIP file - these are working with MS3; I can load them up and work with them with no problem.
2) Then I was also given files as they were. However, I can't open those or work with them in any way for one exception. There is one file that I can load, which has got me wondering. If i try to open these files - not presented in a zip file (just for this one score) a get an error messege.

When I run Musescore, it says that those types of files (presented to me as .mscz,) can't be read, yet there is still one score that doesn't do that.

No matter the regaining method, all those mscz files I retrieved do still hold some data. I have no idea how severe damage has left them and what is there to see. Apparently, there is one that didnt suffer so much that the app encoded it back. Maybe someone familiar with the code could still see something in them and help me.

Is there a way to retrieve any data from these damaged files? Is it possible to get in touch with a programmer of yours and try to work things out for some selected files? I am also inclined to pay if necessary.

Thank you very much

I will send those files if there is someone interested in working with me on my regaining mission.