Посмотри файл htaccess
AddDefaultCharset CP1251
DirectoryIndex index.php
RewriteEngine On
# Основной домен
RewriteCond %{HTTPS} =on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [QSA,L]
# Основные страницы
RewriteRule ^index.html$ index.php [L]
RewriteRule ^stat(/?)+$ index.php?menu=stat [L]
RewriteRule ^rules(/?)+$ index.php?menu=rules [L]
RewriteRule ^news(/?)+$ index.php?menu=news [L]
RewriteRule ^about(/?)+$ index.php?menu=about [L]
RewriteRule ^help(/?)+$ index.php?menu=help [L]
RewriteRule ^signup/key/(.*)(/?)+$ index.php?menu=signup&key=$1 [L]
RewriteRule ^signup(/?)+$ index.php?menu=signup [L]
RewriteRule ^recovery(/?)+$ index.php?menu=recovery [L]
RewriteRule ^reklama(/?)+$ index.php?menu=reklama [L]
RewriteRule ^users(/?)+$ index.php?menu=users [L]
RewriteRule ^payments(/?)+$ index.php?menu=payments [L]
# Серфинг
RewriteRule ^serfing(/?)+$ index.php?menu=account&sel=serfing [L]
RewriteRule ^serfing/edit/([0-9]+)(/?)+$ index.php?menu=account&sel=serfing_add&advedit=$1 [L]
RewriteRule ^serfing/delete/([0-9]+)(/?)+$ index.php?menu=account&sel=serfing&delete=$1 [L]
RewriteRule ^serfing/add(/?)+$ index.php?menu=account&sel=serfing_add [L]
RewriteRule ^serfing/cabinet(/?)+$ index.php?menu=account&sel=serfing_cabinet [L]
RewriteRule ^serfing/moder(/?)+$ index.php?menu=account&sel=serfing_moder [L]
RewriteRule ^serfing/view/([0-9]+)(/?)+$ _serfing_view.php?view=$1 [L]
RewriteRule ^serfing_guest(/?)+$ index.php?menu=serfing_guest [L]
# Аккаунт
RewriteRule ^competition(/?)+$ index.php?menu=competition [L]
RewriteRule ^competition/list(/?)+$ index.php?menu=competition&list [L]
RewriteRule ^competition/list2(/?)+$ index.php?menu=competition&list2 [L]
RewriteRule ^bonus(/?)+$ index.php?menu=account&sel=bonus [L]
RewriteRule ^bonus2(/?)+$ index.php?menu=account&sel=bonus2 [L]
RewriteRule ^bonus3(/?)+$ index.php?menu=account&sel=bonus3 [L]
RewriteRule ^bonus4(/?)+$ index.php?menu=account&sel=bonus4 [L]
RewriteRule ^bonus5(/?)+$ index.php?menu=account&sel=bonus5 [L]
RewriteRule ^bonus6(/?)+$ index.php?menu=account&sel=bonus6 [L]
RewriteRule ^bonus7(/?)+$ index.php?menu=account&sel=bonus7 [L]
RewriteRule ^bonus8(/?)+$ index.php?menu=account&sel=bonus8 [L]
RewriteRule ^bonus9(/?)+$ index.php?menu=account&sel=bonus9 [L]
RewriteRule ^bonus10(/?)+$ index.php?menu=account&sel=bonus10 [L]
RewriteRule ^bankomet(/?)+$ index.php?menu=account&sel=bankomet [L]
RewriteRule ^market(/?)+$ index.php?menu=account&sel=market [L]
RewriteRule ^spinners(/?)+$ index.php?menu=account&sel=spinners [L]
RewriteRule ^lottery(/?)+$ index.php?menu=account&sel=lottery [L]
RewriteRule ^lottery/winners(/?)+$ index.php?menu=account&sel=lottery&winners [L]
RewriteRule ^wall/([-a-zA-Z0-9_]+)(/?)+$ index.php?menu=account&sel=wall&name=$1 [L]
RewriteRule ^wall(/?)+$ index.php?menu=account&sel=wall [L]
RewriteRule ^settings(/?)+$ index.php?menu=account&sel=settings [L]
RewriteRule ^refill(/?)+$ index.php?menu=account&sel=refill [L]
RewriteRule ^payment/([0-9]+)(/?)+$ index.php?menu=account&sel=payment&pay_id=$1 [L]
RewriteRule ^payment(/?)+$ index.php?menu=account&sel=payment [L]
RewriteRule ^exchange(/?)+$ index.php?menu=account&sel=exchange [L]
RewriteRule ^referrals(/?)+$ index.php?menu=account&sel=referrals [L]
RewriteRule ^account/payment_ruc/([0-9]+)(/?)+$ index.php?menu=account&sel=payment_ruc&pay_id=$1 [L]
RewriteRule ^account/payment_ruc(/?)+$ index.php?menu=account&sel=payment_ruc [L]
RewriteRule ^payment_ruc/([0-9]+)(/?)+$ index.php?menu=account&sel=payment_ruc&pay_id=$1 [L]
RewriteRule ^payment_ruc(/?)+$ index.php?menu=account&sel=payment_ruc [L]
RewriteRule ^output(/?)+$ index.php?menu=account&sel=output [L]
RewriteRule ^profile(/?)+$ index.php?menu=account [L]
RewriteRule ^account/magazin(/?)+$ index.php?menu=account&sel=magazin [L]
# ЧАТ
RewriteRule ^account/chat(/?)+$ index.php?menu=account&sel=chat [L]
RewriteRule ^account/chat/noban/([a-zA-Z0-9]+)(/?)+$ index.php?menu=account&sel=chat&noban=$1 [L]
пшп версию попробуй поменяй
было 7.1 поменял на 5.6 без изменений