Hi
I implemented those quickfixes for you - withour updating vBET.
If you do update your vBET you will have to modify code again, becouse do not oficialy supports older version of vBulletin
I checked and you reach your limits in both Microsoft and Apertium, like it is said here
You've reached your limits so text is not translated, but once translated text like thread title will show up.
Please note you use only free translations API's you can always use paid ones: Google API translation v2, and paid subscription of Microsoft Trabnslation by Azure(if you update your PHP)