remove your cache if you are using it..
dancik firstly you should start seo to rank your forum in google you can also use social media platforms. when you will receive registration then you must be accepted registration to start your forum but be aware from spammers.
after all this kind of things make the chcek and balance on and not allow new users to ad signatures.
make a policy for every new users.
that will help you to save your forum from spammers.
