sorry, i deleted the message and forgot to add the link later. the solution for scrolling bug is
here
well, i tested before adding your modification and it was only a chome bug (at least in my computer), but your code in overall_footer.php worked perfectly so it's solved
the gap space is still there. i tried with default phpbb theme and it didnt solve, i tried with another wordpress theme and the gap is bigger, so im thinking that pretty sure the problem is in wordpress pages. it seems like the themes left a margin between the end of the page and the footer by default. i'm going to work with the page-forum.php and css template file on my own and ask in the theme support forum if i can't find the solution.
thanks for your support, you are really efficient
p.s: i saw in wp user options that there are new profiles, the old (suscriptor, editor, administrator, etc) from wp roles and the new (spectator, participant, keymaster, etc.) from phpbb roles. there is no interference between them? for example, if a new user registers from phpbb takes a participant profile in phpbb and subscriptor in wordpress and viceversa? i don't know how this role integration works