This website lists when events are on, and we are not involved with organising any of them.
If you have a registation issue (e.g. trouble with the registration form, lost your registration details, etc), then you need to get in touch with the event organisers. There is no point sending issues with registration to us as we cannot help with them.
To do this, go back to the event you were looking at where you will find links through to the website, contact page and/or Facebook page for the specific event. Click through to one of those and contact the event organiser there.