Hi there Ouzeriaboy and welcome along
Rigth, Catchpha. This is designed to thwart spambots which have become more proficient at breaking such measures, the simpler it is the more easily it's bypassed. Thus to thwart the software later versions of Catchpha uses non-words as well as real ones and additionally will compress the letters by removing spacing. The side-effect is that sometimes it can be hard to tell what it is, however, if it is too messed up one can always request a new phrase to try. It can be trying but if it's too easy then the bots just sail on in and spam the board, lesser of two evils I think.
The email would appear to be immediate, I tested it meself and it was right there when I checked directly after registering a test account; it is possible that a spam filter directed it to trash at your end and hence it didn't show in your inbox. There may be some other reason for its non-arrival but as far as I can tell they are going out without any issue.
Anyhoo, despite those issues here you are and I look forward to you contributions
Hope is but the first step upon the road to disappointment.