Hi,
Yes, you can change your account manager language by using a hard link like this:
https://webhostpro.com/clientarea.php?language=english
Other examples include:
https://webhostpro.com/clientarea.php?language=spanish
https://webhostpro.com/clientarea.php?language=german
https://webhostpro.com/clientarea.php?language=french
https://webhostpro.com/clientarea.php?language=mandarin
https://webhostpro.com/clientarea.php?language=hindi
https://webhostpro.com/clientarea.php?language=japanese
And several more are added all the time.
Just make sure you are logged in first, then cut and paste this URL into the same browser you are logged into.