p8pbb bridge doesn't have own database tables, so the its own impact is minimum.
But note that actually both phpBB and Joomla are loaded at once.
Russian language is possible for contacting our Support Center, there is no russian language pack.
Discounts are available for users who bought 2+ extensions:
Second or third license of the same product - 20% discount!
Customers who have > 3 orders get all next licenses with 30% discount!
Only active (not expired) orders are counted.