I am going to need more information on what you mean by the Thanks plugin ‘not working’. What is happening?
On the stats – these are cached and updated – by default once an hour. They do this with a standard WP Cron task. You can also run this manually from the forum admin > Toolbox Cron Inspector. If, after the scheduled time they still do not update it might be that your WordPress Cron ‘engine’ has not scheduled the tasks properly. Deactivating and instantly reactivating SP will usually resolve that – but it should not need it.
As to translation – have you checked if a full translation has been made for your language? And have you included a translation file for your SP theme which covers most of what is needed?
The quickest way to check is to click on the little ‘i’ link next to the SP copyright link at the very bottom. This opens an ‘about’ popup. If anything is translated in that popup then translations are working correctly.