PHP Scripts

hello,
i have website s script php open source and i would like a company to correct some mistakes on the script , such as :
1. Reseller bug
When a Reseller adds a Subseller, the Subseller dont can add lines.
I must go first do Adminpanel and Enable (Add User:Yes)
If i dont do that automatacally is Gshare user add ON.
The same is When a Reseller Change something for the Subseller, Like Passwort or Price or add Testline.
Have to reactivate Add userlines on Adminpanel
2. Forwarding to Page after ADD lines or make Changes not works sometimes ( Have to -> Click Here if Page not does automatcally for Forwarding)
3. expired lines not goes to suspend on Panel.
4. Captcher / The Captcher is not easy to read, Maybe Google Captcher better.
5. Software / ADD Downloads for Reseller to Panel Like Oscam or Dvbapi ..
6. Bug on Admin Panel with add 3 Day Trial . Data goes to 2029
7. Miss some Translate on German.php like -> users_active_today and users_active_yasterday .
I search on script but nothing there to translate.
8. provide security of files and close cavities php sql…
9. upgrade of database to be compatible with new changes .
10. activate of mailing script *it s available but not working *
11. activate of sms script *it s available but not working *
12. correct of admin panel’s language
13. correct of mistakes logs / debug .
14. adding connected resellers and subresellers’s option. *that means i can know the country they connect from and the real time* .
15. hiding some info from the subreseller’s page,such as a subreseller sould not know some url links that can move them to a provider
16. correct mistakes inside on the design Style
17. checking the system of invoices and payements and rapport of payements and correct mistakes if any.
18. checking credits system on the admin and reseller panel , also close any error that will let a reseller add credit to his subreseller without having credit .
19. *External link file* 777 *writing and reading *this file uses link of script panel with exterior vps servers ,upgrading of it to prevent its hack,and correct errors to let clients add users and work correctly
*20*. one note , we will need credible company that will work on the project and will confirm to us it s able to do this work. script will be set on our development servers demo.