Not really sure about that, changing from vBulletin to something won't change anything if the site is being ddos. I suggest to stop using any control...
is there any account that is not limited or has been verified?. usually paypal, limits the account of you received/sent over $5000. and starts asking...
is there any account that is not limited or has been verified?. usually paypal, limits the account of you received/sent over $5000. and starts asking...