my question: When i log out from vbulletin, my template is changed to default. why is it? thanks who answered.
It looks like your custom style can`t be used by guests. Check next items:
Set your custom style as the default style: ACP - vBulletin Options - vBulletin Options - Style & Language Settings - Allow Users To Change Styles - Default Style
Be shure users can change styles if you need this: ACP - vBulletin Options - vBulletin Options - Style & Language Settings - Allow Users To Change Styles - Yes
Be shure that your custom style checked here: ACP - Styles & Templates - Style Manager