Help Excel and user form

[cyberbot]

Dear All,
a friend of mine helped to make a invoice on excel with build database ( sheet2) with names.
however when i click " chose user " its shows up the form and i can just put the name of the customer and its pick's up the adres and the other information.
lately its stops working and dont know why !
i've tried it on a different computer with different office version " 2010" and it works.

when i go to the devolopement bar on Excel 2013 and click run script it works fine no error.

My Office version is 2013 Pro Plus.

can you please put me on the right direction to fix this ?
the excel is on a remote terminal computer and can't just reinstall it.

PS : Marco security settings are off.

Much appreciate it