[haimmaik]

thats because u need to enable some modules so ur AMXX will be
able to read my plugin (or other plugins)

go to
amxmodx\config\modules.ini

open it with notepad or other text editor...

and take off the ";" from the modules

fun_amxx.dll
engine_amxx.dll
fakemeta_amxx.dll
cstrike_amxx.dll
csx_amxx.dll

in order to activate them... and restart the server.

MAKE SURE ITS NOT:
;fun_amxx.dll
;engine_amxx.dll
;fakemeta_amxx.dll
;cstrike_amxx.dll
;csx_amxx.dll

cuz if it is.. it says that they'r off.