Earlier today, had no issues registering new users. Altered some settings within Admin and now new registrations are allowed, getting Access Denied screen just have Accepting of Terms Screen selecting Yes Accept Button then get the Access Denied error.

I also just enabled SSL wondering if there is a connection or not.

I am new to YAF, are there any logs I can look at to help understand what's going on?

Think the issue was related to when changed captcha from default... reverted back and registration works again