AlterBrains

Technical
- If my joomla is on http://www.site.com and my forums are on forums.site.com, can I use p8pbb ?
- If my users are not synched between phpbb and joomla, how does it work? i.e. if a user wants to post a comment in the article page (like on this site), without going to the forums - how does he login to phpbb?

Other
- Is there a refund period after buying it? I know some developers offer this, 15 or 30 day.

Thanks

- If my joomla is on http://www.site.com and my forums are on forums.site.com, can I use p8pbb ?

No, phpBB should be installed on same domain in 1st-level folder, i.e. in http://www.site.com/phpBB3

- If my users are not synched between phpbb and joomla, how does it work? i.e. if a user wants to post a comment in the article page (like on this site), without going to the forums - how does he login to phpbb?

If forum allows answering to topic for logged users only - user should be already logged in phpBB. Otherwise user will see 'Please login first' error message.

- Is there a refund period after buying it? I know some developers offer this, 15 or 30 day.

We don't have refunds without serious reason, here is our refund policy:
http://alterbrains.com/refund-policy

Hi,
- About the first issue - is there no way around it?
cannot the domain just be pointed at a different place ? (I know that jfusion does it for the bridge).

- So if I allow guest posts, they willl be able to post, but in order to post under the username, they have be logged on - got it.

- The refund policy is disappointing, other extension offer 30-day full refund (i.e. sh404SEF and more).
This way, I have no idea whether it will work properly on my site and test it. espcially if there is no easy solution to the first issue (forum in different sub-domain)

- About the first issue - is there no way around it?
cannot the domain just be pointed at a different place ? (I know that jfusion does it for the bridge).

No, this is essential requirement. Actually it should work if using another domain for phpBB, but phpBB files should be located in 1st-level subfolder of Joomla domain, i.e. http://joomla.com/phpBB3 if phpBB is loaded via subdomain http://phpBB3.joomla.com/

- So if I allow guest posts, they willl be able to post, but in order to post under the username, they have be logged on - got it.

Yes, user should be logged in phpBB in this case.

- The refund policy is disappointing, other extension offer 30-day full refund (i.e. sh404SEF and more).
This way, I have no idea whether it will work properly on my site and test it. espcially if there is no easy solution to the first issue (forum in different sub-domain)

It's simple: please check all extension requirements, if they are met - it will work, otherwise it will not work. If requirements are met but it doesn't work - we will try to fix it, if we fail to fix it - we issue a refund.