Chopper Challenge and all other Games from your v3arcade can be converted to ibProArcade, including all the scores if you want.
Use
the Converter for that, it will guide you through the steps...
About the Score-Saving:
your v3arcade seems to be still active as /arcade.php and that is where the scores are submitted. Rename you v3arcade's arcade.php to v3arcade.php and make sure ibProArcade is /arcade.php
Are you running any portal on your site, so that index.php is not the original one from vBulletin ? Then read the included instructions "vbadvanced and other portals.txt"
If you need further assistance, feel free to ask - if there is need I can help with installation/conversion
Language btw is global for the whole arcade, not per user, sorry